NBEdge.cpp

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/****************************************************************************/
// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
// Copyright (C) 2001-2024 German Aerospace Center (DLR) and others.
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0/
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License 2.0 are satisfied: GNU General Public License, version 2
// or later which is available at
// https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
/****************************************************************************/
// Methods for the representation of a single edge
/****************************************************************************/
#include <config.h>
 
#include <vector>
#include <string>
#include <algorithm>
#include <cmath>
#include <iomanip>
#include <utils/common/MsgHandler.h>
#include <utils/common/StringTokenizer.h>
#include <utils/common/StringUtils.h>
#include <utils/common/ToString.h>
#include <utils/common/UtilExceptions.h>
#include <utils/common/StdDefs.h>
#include <utils/geom/GeomHelper.h>
#include <utils/options/OptionsCont.h>
#include "NBEdgeCont.h"
#include "NBNode.h"
#include "NBNodeCont.h"
#include "NBContHelper.h"
#include "NBHelpers.h"
#include "NBTrafficLightDefinition.h"
#include "NBOwnTLDef.h"
#include "NBTypeCont.h"
#include "NBEdge.h"
 
//#define ADDITIONAL_WARNINGS
//#define DEBUG_CONNECTION_GUESSING
//#define DEBUG_CONNECTION_CHECKING
//#define DEBUG_ANGLES
//#define DEBUG_NODE_BORDER
//#define DEBUG_REPLACECONNECTION
//#define DEBUG_JUNCTIONPRIO
//#define DEBUG_TURNSIGNS
//#define DEBUG_CUT_LANES
#define DEBUGID ""
#define DEBUGCOND (getID() == DEBUGID)
//#define DEBUGCOND (StringUtils::startsWith(getID(), DEBUGID))
//#define DEBUGCOND (getID() == "22762377#1" || getID() == "146511467")
#define DEBUGCOND2(obj) ((obj != 0 && (obj)->getID() == DEBUGID))
//#define DEBUGCOND (true)
 
// ===========================================================================
// static members
// ===========================================================================
const double NBEdge::UNSPECIFIED_WIDTH = -1;
const double NBEdge::UNSPECIFIED_OFFSET = 0;
const double NBEdge::UNSPECIFIED_SPEED = -1;
const double NBEdge::UNSPECIFIED_FRICTION = 1.;
const double NBEdge::UNSPECIFIED_CONTPOS = -1;
const double NBEdge::UNSPECIFIED_VISIBILITY_DISTANCE = -1;
 
const double NBEdge::UNSPECIFIED_SIGNAL_OFFSET = -1;
const double NBEdge::UNSPECIFIED_LOADED_LENGTH = -1;
const double NBEdge::ANGLE_LOOKAHEAD = 10.0;
const int NBEdge::UNSPECIFIED_INTERNAL_LANE_INDEX = -1;
const bool NBEdge::UNSPECIFIED_CONNECTION_UNCONTROLLED = false;
 
double NBEdge::myDefaultConnectionLength = NBEdge::UNSPECIFIED_LOADED_LENGTH;
 
NBEdge NBEdge::DummyEdge;
 
ConstRouterEdgePairVector NBEdge::Connection::myViaSuccessors = ConstRouterEdgePairVector({ std::pair<NBRouterEdge*, NBRouterEdge*>(nullptr, nullptr) });
 
// ===========================================================================
// method definitions
// ===========================================================================
std::string
NBEdge::Connection::getInternalLaneID() const {
    return id + "_" + toString(internalLaneIndex);
}
 
 
std::string
NBEdge::Connection::getInternalViaLaneID() const {
    return viaID + "_" + toString(internalViaLaneIndex);
}
 
 
std::string
NBEdge::Connection::getDescription(const NBEdge* parent) const {
    return (Named::getIDSecure(parent) + "_" + toString(fromLane) + "->" + Named::getIDSecure(toEdge) + "_" + toString(toLane)
            + (permissions == SVC_UNSPECIFIED ? "" : " (" + getVehicleClassNames(permissions) + ")"));
}
 
 
NBEdge::Connection::Connection(int fromLane_, NBEdge* toEdge_, int toLane_, const bool mayDefinitelyPass_) :
    fromLane(fromLane_),
    toEdge(toEdge_),
    toLane(toLane_),
    mayDefinitelyPass(mayDefinitelyPass_),
    customLength(myDefaultConnectionLength),
    id(toEdge_ == nullptr ? "" : toEdge->getFromNode()->getID()) {
}
 
 
NBEdge::Lane::Lane(NBEdge* e, const std::string& origID_) :
    speed(e->getSpeed()),
    friction(e->getFriction()),
    permissions(SVCAll),
    preferred(0),
    changeLeft(SVCAll),
    changeRight(SVCAll),
    endOffset(e->getEndOffset()),
    laneStopOffset(e->getEdgeStopOffset()),
    width(e->getLaneWidth()),
    accelRamp(false),
    connectionsDone(false) {
    if (origID_ != "") {
        setParameter(SUMO_PARAM_ORIGID, origID_);
    }
}
 
 
/* -------------------------------------------------------------------------
 * NBEdge::ToEdgeConnectionsAdder-methods
 * ----------------------------------------------------------------------- */
void
NBEdge::ToEdgeConnectionsAdder::execute(const int lane, const int virtEdge) {
    // check
    assert((int)myTransitions.size() > virtEdge);
    // get the approached edge
    NBEdge* succEdge = myTransitions[virtEdge];
    std::vector<int> lanes;
 
    // check whether the currently regarded, approached edge has already
    //  a connection starting at the edge which is currently being build
    std::map<NBEdge*, std::vector<int> >::iterator i = myConnections.find(succEdge);
    if (i != myConnections.end()) {
        // if there were already lanes assigned, get them
        lanes = (*i).second;
    }
 
    // check whether the current lane was already used to connect the currently
    //  regarded approached edge
    std::vector<int>::iterator j = std::find(lanes.begin(), lanes.end(), lane);
    if (j == lanes.end()) {
        // if not, add it to the list
        lanes.push_back(lane);
    }
    // set information about connecting lanes
    myConnections[succEdge] = lanes;
}
 
 
 
/* -------------------------------------------------------------------------
 * NBEdge::MainDirections-methods
 * ----------------------------------------------------------------------- */
NBEdge::MainDirections::MainDirections(const EdgeVector& outgoing, NBEdge* parent, NBNode* to, const std::vector<int>& availableLanes) : myStraightest(-1) {
    NBContHelper::edge_similar_direction_sorter sorter(parent);
    const NBEdge* straight = nullptr;
    for (const NBEdge* const out : outgoing) {
        const SVCPermissions outPerms = out->getPermissions();
        for (const int l : availableLanes) {
            if ((parent->myLanes[l].permissions & outPerms) != 0) {
                if (straight == nullptr || sorter(out, straight)) {
                    straight = out;
                }
                break;
            }
        }
    }
    if (straight == nullptr) {
        return;
    }
    myStraightest = (int)std::distance(outgoing.begin(), std::find(outgoing.begin(), outgoing.end(), straight));
 
    // check whether the right turn has a higher priority
    assert(outgoing.size() > 0);
    const LinkDirection straightestDir = to->getDirection(parent, straight);
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND2(parent)) {
        std::cout << " MainDirections edge=" << parent->getID() << " straightest=" << straight->getID() << " dir=" << toString(straightestDir) << "\n";
    }
#endif
    if (NBNode::isTrafficLight(to->getType()) &&
            (straightestDir == LinkDirection::STRAIGHT || straightestDir == LinkDirection::PARTLEFT || straightestDir == LinkDirection::PARTRIGHT)) {
        myDirs.push_back(MainDirections::Direction::FORWARD);
        return;
    }
    if (outgoing[0]->getJunctionPriority(to) == 1) {
        myDirs.push_back(MainDirections::Direction::RIGHTMOST);
    }
    // check whether the left turn has a higher priority
    if (outgoing.back()->getJunctionPriority(to) == 1) {
        // ok, the left turn belongs to the higher priorised edges on the junction
        //  let's check, whether it has also a higher priority (lane number/speed)
        //  than the current
        if (outgoing.back()->getPriority() > straight->getPriority() ||
                outgoing.back()->getNumLanes() > straight->getNumLanes()) {
            myDirs.push_back(MainDirections::Direction::LEFTMOST);
        }
    }
    // check whether the forward direction has a higher priority
    // check whether it has a higher priority and is going straight
    if (straight->getJunctionPriority(to) == 1 && to->getDirection(parent, straight) == LinkDirection::STRAIGHT) {
        myDirs.push_back(MainDirections::Direction::FORWARD);
    }
}
 
 
NBEdge::MainDirections::~MainDirections() {}
 
 
bool
NBEdge::MainDirections::empty() const {
    return myDirs.empty();
}
 
 
bool
NBEdge::MainDirections::includes(Direction d) const {
    return std::find(myDirs.begin(), myDirs.end(), d) != myDirs.end();
}
 
 
/* -------------------------------------------------------------------------
 * NBEdge::connections_relative_edgelane_sorter-methods
 * ----------------------------------------------------------------------- */
int
NBEdge::connections_relative_edgelane_sorter::operator()(const Connection& c1, const Connection& c2) const {
    if (c1.toEdge != c2.toEdge) {
        return NBContHelper::relative_outgoing_edge_sorter(myEdge)(c1.toEdge, c2.toEdge);
    }
    return c1.toLane < c2.toLane;
}
 
 
/* -------------------------------------------------------------------------
 * NBEdge-methods
 * ----------------------------------------------------------------------- */
NBEdge::NBEdge(const std::string& id, NBNode* from, NBNode* to,
               std::string type, double speed, double friction, int nolanes,
               int priority, double laneWidth, double endOffset,
               LaneSpreadFunction spread, const std::string& streetName) :
    Named(StringUtils::convertUmlaute(id)),
    myStep(EdgeBuildingStep::INIT),
    myType(StringUtils::convertUmlaute(type)),
    myFrom(from), myTo(to),
    myStartAngle(0), myEndAngle(0), myTotalAngle(0),
    myPriority(priority), mySpeed(speed), myFriction(friction),
    myDistance(0),
    myTurnDestination(nullptr),
    myPossibleTurnDestination(nullptr),
    myFromJunctionPriority(-1), myToJunctionPriority(-1),
    myLaneSpreadFunction(spread), myEndOffset(endOffset),
    myLaneWidth(laneWidth),
    myLoadedLength(UNSPECIFIED_LOADED_LENGTH),
    myAmInTLS(false), myAmMacroscopicConnector(false),
    myStreetName(streetName),
    mySignalPosition(Position::INVALID),
    mySignalNode(nullptr),
    myIsOffRamp(false),
    myIsBidi(false),
    myIndex(-1) {
    init(nolanes, false, "");
}
 
 
NBEdge::NBEdge(const std::string& id, NBNode* from, NBNode* to,
               std::string type, double speed, double friction, int nolanes,
               int priority, double laneWidth, double endOffset,
               PositionVector geom,
               LaneSpreadFunction spread,
               const std::string& streetName,
               const std::string& origID,
               bool tryIgnoreNodePositions) :
    Named(StringUtils::convertUmlaute(id)),
    myStep(EdgeBuildingStep::INIT),
    myType(StringUtils::convertUmlaute(type)),
    myFrom(from), myTo(to),
    myStartAngle(0), myEndAngle(0), myTotalAngle(0),
    myPriority(priority), mySpeed(speed), myFriction(friction),
    myDistance(0),
    myTurnDestination(nullptr),
    myPossibleTurnDestination(nullptr),
    myFromJunctionPriority(-1), myToJunctionPriority(-1),
    myGeom(geom), myLaneSpreadFunction(spread), myEndOffset(endOffset),
    myLaneWidth(laneWidth),
    myLoadedLength(UNSPECIFIED_LOADED_LENGTH),
    myAmInTLS(false), myAmMacroscopicConnector(false),
    myStreetName(streetName),
    mySignalPosition(Position::INVALID),
    mySignalNode(nullptr),
    myIsOffRamp(false),
    myIsBidi(false),
    myIndex(-1) {
    init(nolanes, tryIgnoreNodePositions, origID);
}
 
 
NBEdge::NBEdge(const std::string& id, NBNode* from, NBNode* to, const NBEdge* tpl, const PositionVector& geom, int numLanes) :
    Named(StringUtils::convertUmlaute(id)),
    myStep(EdgeBuildingStep::INIT),
    myType(tpl->getTypeID()),
    myFrom(from), myTo(to),
    myStartAngle(0), myEndAngle(0), myTotalAngle(0),
    myPriority(tpl->getPriority()), mySpeed(tpl->getSpeed()),
    myFriction(tpl->getFriction()),
    myDistance(0),
    myTurnDestination(nullptr),
    myPossibleTurnDestination(nullptr),
    myFromJunctionPriority(-1), myToJunctionPriority(-1),
    myGeom(geom),
    myLaneSpreadFunction(tpl->getLaneSpreadFunction()),
    myEndOffset(tpl->getEndOffset()),
    myEdgeStopOffset(tpl->getEdgeStopOffset()),
    myLaneWidth(tpl->getLaneWidth()),
    myLoadedLength(UNSPECIFIED_LOADED_LENGTH),
    myAmInTLS(false),
    myAmMacroscopicConnector(false),
    myStreetName(tpl->getStreetName()),
    mySignalPosition(to == tpl->myTo ? tpl->mySignalPosition : Position::INVALID),
    mySignalNode(to == tpl->myTo ? tpl->mySignalNode : nullptr),
    myIsOffRamp(false),
    myIsBidi(false),
    myIndex(-1) {
    init(numLanes > 0 ? numLanes : tpl->getNumLanes(), myGeom.size() > 0, "");
    for (int i = 0; i < getNumLanes(); i++) {
        const int tplIndex = MIN2(i, tpl->getNumLanes() - 1);
        setSpeed(i, tpl->getLaneSpeed(tplIndex));
        setFriction(i, tpl->getLaneFriction(tplIndex));
        setPermissions(tpl->getPermissions(tplIndex), i);
        setLaneWidth(i, tpl->myLanes[tplIndex].width);
        setLaneType(i, tpl->myLanes[tplIndex].type);
        myLanes[i].updateParameters(tpl->myLanes[tplIndex].getParametersMap());
        if (to == tpl->myTo) {
            setEndOffset(i, tpl->myLanes[tplIndex].endOffset);
            setEdgeStopOffset(i, tpl->myLanes[tplIndex].laneStopOffset);
        }
    }
    if (tpl->myLoadedLength > 0 && to == tpl->getFromNode() && from == tpl->getToNode() && geom == tpl->getGeometry().reverse()) {
        myLoadedLength = tpl->myLoadedLength;
    }
    updateParameters(tpl->getParametersMap());
}
 
 
NBEdge::NBEdge() :
    Named("DUMMY"),
    myStep(EdgeBuildingStep::INIT),
    myFrom(nullptr), myTo(nullptr),
    myStartAngle(0), myEndAngle(0), myTotalAngle(0),
    myPriority(0), mySpeed(0), myFriction(UNSPECIFIED_FRICTION),
    myDistance(0),
    myTurnDestination(nullptr),
    myPossibleTurnDestination(nullptr),
    myFromJunctionPriority(-1), myToJunctionPriority(-1),
    myLaneSpreadFunction(LaneSpreadFunction::RIGHT),
    myEndOffset(0),
    myEdgeStopOffset(StopOffset()),
    myLaneWidth(0),
    myLoadedLength(UNSPECIFIED_LOADED_LENGTH),
    myAmInTLS(false),
    myAmMacroscopicConnector(false),
    mySignalPosition(Position::INVALID),
    mySignalNode(nullptr) {
}
 
 
void
NBEdge::reinit(NBNode* from, NBNode* to, const std::string& type,
               double speed, double friction, int nolanes, int priority,
               PositionVector geom, double laneWidth, double endOffset,
               const std::string& streetName,
               LaneSpreadFunction spread,
               bool tryIgnoreNodePositions) {
    if (myFrom != from) {
        myFrom->removeEdge(this, false);
    }
    if (myTo != to) {
        myTo->removeEdge(this, false);
    }
    myType = StringUtils::convertUmlaute(type);
    myFrom = from;
    myTo = to;
    myPriority = priority;
    //?myTurnDestination(0),
    //?myFromJunctionPriority(-1), myToJunctionPriority(-1),
    myGeom = geom;
    myLaneSpreadFunction = spread;
    myLoadedLength = UNSPECIFIED_LOADED_LENGTH;
    myStreetName = streetName;
    //?, myAmTurningWithAngle(0), myAmTurningOf(0),
    //?myAmInTLS(false), myAmMacroscopicConnector(false)
 
    // preserve lane-specific settings (geometry must be recomputed)
    // if new lanes are added they copy the values from the leftmost lane (if specified)
    const std::vector<Lane> oldLanes = myLanes;
    init(nolanes, tryIgnoreNodePositions, oldLanes.empty() ? "" : oldLanes[0].getParameter(SUMO_PARAM_ORIGID));
    for (int i = 0; i < (int)nolanes; ++i) {
        PositionVector newShape = myLanes[i].shape;
        myLanes[i] = oldLanes[MIN2(i, (int)oldLanes.size() - 1)];
        myLanes[i].shape = newShape;
    }
    // however, if the new edge defaults are explicityly given, they override the old settings
    if (endOffset != UNSPECIFIED_OFFSET) {
        setEndOffset(-1, endOffset);
    }
    if (laneWidth != UNSPECIFIED_WIDTH) {
        setLaneWidth(-1, laneWidth);
    }
    if (speed != UNSPECIFIED_SPEED) {
        setSpeed(-1, speed);
    }
    if (friction != UNSPECIFIED_FRICTION) {
        setFriction(-1, friction);
    }
}
 
 
void
NBEdge::reinitNodes(NBNode* from, NBNode* to) {
    // connections may still be valid
    if (from == nullptr || to == nullptr) {
        throw ProcessError(TLF("At least one of edge's '%' nodes is not known.", myID));
    }
    if (myFrom != from) {
        myFrom->removeEdge(this, false);
    }
    if (myTo != to) {
        myTo->removeEdge(this, false);
    }
    // remove first from both nodes and then add to the new nodes
    // (otherwise reversing does not work)
    if (myFrom != from) {
        myFrom = from;
        myFrom->addOutgoingEdge(this);
    }
    if (myTo != to) {
        myTo = to;
        myTo->addIncomingEdge(this);
    }
    computeAngle();
}
 
 
void
NBEdge::init(int noLanes, bool tryIgnoreNodePositions, const std::string& origID) {
    if (noLanes == 0) {
        throw ProcessError(TLF("Edge '%' needs at least one lane.", myID));
    }
    if (myFrom == nullptr || myTo == nullptr) {
        throw ProcessError(TLF("At least one of edge's '%' nodes is not known.", myID));
    }
    if (!SUMOXMLDefinitions::isValidNetID(myID)) {
        throw ProcessError(TLF("Invalid edge id '%'.", myID));
    }
    // revisit geometry
    //  should have at least two points at the end...
    //  and in dome cases, the node positions must be added
    // attempt symmetrical removal for forward and backward direction
    // (very important for bidiRail)
    if (myFrom->getID() < myTo->getID()) {
        PositionVector reverse = myGeom.reverse();
        reverse.removeDoublePoints(POSITION_EPS, true);
        myGeom = reverse.reverse();
    } else {
        myGeom.removeDoublePoints(POSITION_EPS, true);
    }
 
    if (!tryIgnoreNodePositions || myGeom.size() < 2) {
        if (myGeom.size() == 0) {
            myGeom.push_back(myFrom->getPosition());
            myGeom.push_back(myTo->getPosition());
        } else {
            myGeom.push_back_noDoublePos(myTo->getPosition());
            myGeom.push_front_noDoublePos(myFrom->getPosition());
        }
    }
    if (myGeom.size() < 2) {
        myGeom.clear();
        myGeom.push_back(myFrom->getPosition());
        myGeom.push_back(myTo->getPosition());
    }
    if (myGeom.size() == 2 && myGeom[0] == myGeom[1]) {
        WRITE_WARNINGF(TL("Edge's '%' from- and to-node are at the same position."), myID);
        int patchIndex = myFrom->getID() < myTo->getID() ? 1 : 0;
        myGeom[patchIndex].add(Position(POSITION_EPS, POSITION_EPS));
    }
    //
    myFrom->addOutgoingEdge(this);
    myTo->addIncomingEdge(this);
    // prepare container
    assert(myGeom.size() >= 2);
    myLength = myGeom.length();
    if ((int)myLanes.size() > noLanes) {
        // remove connections starting at the removed lanes
        for (int lane = noLanes; lane < (int)myLanes.size(); ++lane) {
            removeFromConnections(nullptr, lane, -1);
        }
        // remove connections targeting the removed lanes
        const EdgeVector& incoming = myFrom->getIncomingEdges();
        for (EdgeVector::const_iterator i = incoming.begin(); i != incoming.end(); i++) {
            for (int lane = noLanes; lane < (int)myLanes.size(); ++lane) {
                (*i)->removeFromConnections(this, -1, lane);
            }
        }
    }
    myLanes.clear();
    for (int i = 0; i < noLanes; i++) {
        myLanes.push_back(Lane(this, origID));
    }
    computeLaneShapes();
    computeAngle();
 
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << "init edge=" << getID() << "\n";
        for (Connection& c : myConnections) {
            std::cout << "  conn " << c.getDescription(this) << "\n";
        }
        for (Connection& c : myConnectionsToDelete) {
            std::cout << "  connToDelete " << c.getDescription(this) << "\n";
        }
    }
#endif
}
 
 
NBEdge::~NBEdge() {}
 
 
// -----------  Applying offset
void
NBEdge::reshiftPosition(double xoff, double yoff) {
    myGeom.add(xoff, yoff, 0);
    for (Lane& lane : myLanes) {
        lane.customShape.add(xoff, yoff, 0);
    }
    computeLaneShapes(); // old shapes are dubious if computed with large coordinates
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
        (*i).customShape.add(xoff, yoff, 0);
    }
    if (mySignalPosition != Position::INVALID) {
        mySignalPosition.add(xoff, yoff);
    }
    myFromBorder.add(xoff, yoff, 0);
    myToBorder.add(xoff, yoff, 0);
    computeEdgeShape();
    computeAngle(); // update angles because they are numerically sensitive (especially where based on centroids)
}
 
 
void
NBEdge::mirrorX() {
    myGeom.mirrorX();
    for (int i = 0; i < (int)myLanes.size(); i++) {
        myLanes[i].shape.mirrorX();
        myLanes[i].customShape.mirrorX();
    }
    for (Connection& c : myConnections) {
        c.shape.mirrorX();
        c.viaShape.mirrorX();
        c.customShape.mirrorX();
    }
    if (mySignalPosition != Position::INVALID) {
        mySignalPosition.sety(-mySignalPosition.y());
    }
    computeAngle(); // update angles because they are numerically sensitive (especially where based on centroids)
}
 
 
// ----------- Edge geometry access and computation
const PositionVector
NBEdge::getInnerGeometry() const {
    return myGeom.getSubpartByIndex(1, (int)myGeom.size() - 2);
}
 
 
bool
NBEdge::hasDefaultGeometry() const {
    return myGeom.size() == 2 && hasDefaultGeometryEndpoints();
}
 
 
bool
NBEdge::hasDefaultGeometryEndpoints() const {
    return myGeom.front().almostSame(myFrom->getPosition(), 0.01)  &&
           myGeom.back().almostSame(myTo->getPosition(), 0.01);
}
 
 
bool
NBEdge::hasDefaultGeometryEndpointAtNode(const NBNode* node) const {
    // do not extend past the node position
    if (node == myFrom) {
        return myGeom.front() == node->getPosition();
    } else {
        assert(node == myTo);
        return myGeom.back() == node->getPosition();
    }
}
 
Position
NBEdge::getEndpointAtNode(const NBNode* node) const {
    return node == myFrom ? myGeom.front() : myGeom.back();
}
 
void
NBEdge::resetEndpointAtNode(const NBNode* node) {
    assert(myGeom.size() >= 2);
    if (node == myFrom) {
        myGeom[0] = myFrom->getPosition();
    } else if (node == myTo) {
        myGeom[-1] = myTo->getPosition();
    } else {
        assert(false);
    }
}
 
void
NBEdge::setGeometry(const PositionVector& s, bool inner) {
    Position begin = myGeom.front(); // may differ from node position
    Position end = myGeom.back(); // may differ from node position
    myGeom = s;
    if (inner) {
        myGeom.insert(myGeom.begin(), begin);
        myGeom.push_back(end);
    }
    // ensure non-zero length (see ::init)
    if (myGeom.size() == 2 && myGeom[0] == myGeom[1]) {
        WRITE_WARNINGF(TL("Edge's '%' from- and to-node are at the same position."), myID);
        int patchIndex = myFrom->getID() < myTo->getID() ? 1 : 0;
        myGeom[patchIndex].add(Position(POSITION_EPS, POSITION_EPS));
    }
    computeLaneShapes();
    computeAngle();
    myLength = myGeom.length();
}
 
 
void
NBEdge::extendGeometryAtNode(const NBNode* node, double maxExtent) {
    //std::cout << "extendGeometryAtNode edge=" << getID() << " node=" << node->getID() << " nodePos=" << node->getPosition() << " extent=" << maxExtent << " geom=" << myGeom;
    if (node == myFrom) {
        myGeom.extrapolate(maxExtent, true);
        double offset = myGeom.nearest_offset_to_point2D(node->getPosition());
        //std::cout << " geom2=" << myGeom << " offset=" << offset;
        if (offset != GeomHelper::INVALID_OFFSET) {
            myGeom = myGeom.getSubpart2D(MIN2(offset, myGeom.length2D() - 2 * POSITION_EPS), myGeom.length2D());
        }
    } else {
        assert(node == myTo);
        myGeom.extrapolate(maxExtent, false, true);
        double offset = myGeom.nearest_offset_to_point2D(node->getPosition());
        //std::cout << " geom2=" << myGeom << " offset=" << offset;
        if (offset != GeomHelper::INVALID_OFFSET) {
            myGeom = myGeom.getSubpart2D(0, MAX2(offset, 2 * POSITION_EPS));
        }
    }
    //std::cout << " geom3=" << myGeom << "\n";
}
 
 
void
NBEdge::shortenGeometryAtNode(const NBNode* node, double reduction) {
    //std::cout << "shortenGeometryAtNode edge=" << getID() << " node=" << node->getID() << " nodePos=" << node->getPosition() << " reduction=" << reduction << " geom=" << myGeom;
    reduction = MIN2(reduction, myGeom.length2D() - 2 * POSITION_EPS);
    if (node == myFrom) {
        myGeom = myGeom.getSubpart2D(reduction, myGeom.length2D());
    } else {
        myGeom = myGeom.getSubpart2D(0, myGeom.length2D() - reduction);
    }
    computeLaneShapes();
    //std::cout << " geom2=" << myGeom << "\n";
}
 
 
void
NBEdge::setNodeBorder(const NBNode* node, const Position& p, const Position& p2, bool rectangularCut) {
    PositionVector border;
    if (rectangularCut) {
        const double extend = 100;
        border = myGeom.getOrthogonal(p, extend, node == myTo);
    } else {
        border.push_back(p);
        border.push_back(p2);
    }
    if (border.size() == 2) {
        border.extrapolate2D(getTotalWidth());
        if (node == myFrom) {
            myFromBorder = border;
        } else {
            assert(node == myTo);
            myToBorder = border;
        }
    }
#ifdef DEBUG_NODE_BORDER
    gDebugFlag1 = DEBUGCOND;
    if (DEBUGCOND) std::cout << "setNodeBorder edge=" << getID() << " node=" << node->getID()
                                 << " rect=" << rectangularCut
                                 << " p=" << p << " p2=" << p2
                                 << " border=" << border
                                 << " myGeom=" << myGeom
                                 << "\n";
 
#endif
}
 
 
const PositionVector&
NBEdge::getNodeBorder(const NBNode* node) const {
    if (node == myFrom) {
        return myFromBorder;
    } else {
        assert(node == myTo);
        return myToBorder;
    }
}
 
 
void
NBEdge::resetNodeBorder(const NBNode* node) {
    if (node == myFrom) {
        myFromBorder.clear();
    } else {
        assert(node == myTo);
        myToBorder.clear();
    }
}
 
 
bool
NBEdge::isBidiRail(bool ignoreSpread) const {
    return (isRailway(getPermissions())
            && (ignoreSpread || myLaneSpreadFunction == LaneSpreadFunction::CENTER)
            && myPossibleTurnDestination != nullptr
            && myPossibleTurnDestination->myPossibleTurnDestination == this
            && (ignoreSpread || myPossibleTurnDestination->getLaneSpreadFunction() == LaneSpreadFunction::CENTER)
            && isRailway(myPossibleTurnDestination->getPermissions())
            && myPossibleTurnDestination->getGeometry().reverse() == getGeometry());
}
 
 
bool
NBEdge::isBidiEdge(bool checkPotential) const {
    return myPossibleTurnDestination != nullptr
           && myPossibleTurnDestination->myPossibleTurnDestination == this
           && (myIsBidi || myPossibleTurnDestination->myIsBidi || checkPotential)
           && myPossibleTurnDestination->getToNode() == getFromNode()
           && myPossibleTurnDestination->getLaneSpreadFunction() == myLaneSpreadFunction
           // geometry check a) full overlap geometry
           && ((myLaneSpreadFunction == LaneSpreadFunction::CENTER
                && (myPossibleTurnDestination->getGeometry().reverse() == getGeometry()
                    || (checkPotential && getGeometry().size() == 2 && myPossibleTurnDestination->getGeometry().size() == 2)))
               // b) TWLT (Two-Way-Left-Turn-lane)
               || (myLanes.back().shape.reverse().almostSame(myPossibleTurnDestination->myLanes.back().shape, POSITION_EPS))
              );
 
}
 
 
bool
NBEdge::isRailDeadEnd() const {
    if (!isRailway(getPermissions())) {
        return false;
    }
    for (NBEdge* out : myTo->getOutgoingEdges()) {
        if (isRailway(out->getPermissions()) &&
                out != getTurnDestination(true)) {
            return true;
        }
    }
    return true;
}
 
 
PositionVector
NBEdge::cutAtIntersection(const PositionVector& old) const {
    PositionVector shape = old;
    shape = startShapeAt(shape, myFrom, myFromBorder);
#ifdef DEBUG_CUT_LANES
    if (DEBUGCOND) {
        std::cout << getID() << " cutFrom=" << shape << "\n";
    }
#endif
    if (shape.size() < 2) {
        // only keep the last snippet
        const double oldLength = old.length();
        shape = old.getSubpart(oldLength - 2 * POSITION_EPS, oldLength);
#ifdef DEBUG_CUT_LANES
        if (DEBUGCOND) {
            std::cout << getID() << " cutFromFallback=" << shape << "\n";
        }
#endif
    }
    shape = startShapeAt(shape.reverse(), myTo, myToBorder).reverse();
#ifdef DEBUG_CUT_LANES
    if (DEBUGCOND) {
        std::cout << getID() << " cutTo=" << shape << "\n";
    }
#endif
    // sanity checks
    if (shape.length() < POSITION_EPS) {
        if (old.length() < 2 * POSITION_EPS) {
            shape = old;
        } else {
            const double midpoint = old.length() / 2;
            // EPS*2 because otherwhise shape has only a single point
            shape = old.getSubpart(midpoint - POSITION_EPS, midpoint + POSITION_EPS);
            assert(shape.size() >= 2);
            assert(shape.length() > 0);
#ifdef DEBUG_CUT_LANES
            if (DEBUGCOND) {
                std::cout << getID() << " fallBackShort=" << shape << "\n";
            }
#endif
        }
    } else {
        // @note If the node shapes are overlapping we may get a shape which goes in the wrong direction
        // in this case the result shape should shortened
        if (DEG2RAD(135) < fabs(GeomHelper::angleDiff(shape.beginEndAngle(), old.beginEndAngle()))) {
            // eliminate intermediate points
            PositionVector tmp;
            tmp.push_back(shape[0]);
            tmp.push_back(shape[-1]);
            shape = tmp;
            if (tmp.length() < POSITION_EPS) {
                // fall back to original shape
                if (old.length() < 2 * POSITION_EPS) {
                    shape = old;
                } else {
                    const double midpoint = old.length() / 2;
                    // EPS*2 because otherwhise shape has only a single point
                    shape = old.getSubpart(midpoint - POSITION_EPS, midpoint + POSITION_EPS);
                    assert(shape.size() >= 2);
                    assert(shape.length() > 0);
                }
#ifdef DEBUG_CUT_LANES
                if (DEBUGCOND) {
                    std::cout << getID() << " fallBackReversed=" << shape << "\n";
                }
#endif
            } else {
                const double midpoint = shape.length() / 2;
                // cut to size and reverse
                shape = shape.getSubpart(midpoint - POSITION_EPS, midpoint + POSITION_EPS);
                if (shape.length() < POSITION_EPS) {
                    assert(false);
                    // the shape has a sharp turn near the midpoint
                }
                shape = shape.reverse();
#ifdef DEBUG_CUT_LANES
                if (DEBUGCOND) {
                    std::cout << getID() << " fallBackReversed2=" << shape << " mid=" << midpoint << "\n";
                }
#endif
            }
            // make short edge flat (length <= 2 * POSITION_EPS)
            const double z = (shape[0].z() + shape[1].z()) / 2;
            shape[0].setz(z);
            shape[1].setz(z);
        }
    }
    return shape;
}
 
 
void
NBEdge::computeEdgeShape(double smoothElevationThreshold) {
    if (smoothElevationThreshold > 0 && myGeom.hasElevation()) {
        PositionVector cut = cutAtIntersection(myGeom);
        // cutting and patching z-coordinate may cause steep grades which should be smoothed
        if (!myFrom->geometryLike()) {
            cut[0].setz(myFrom->getPosition().z());
            const double d = cut[0].distanceTo2D(cut[1]);
            const double dZ = fabs(cut[0].z() - cut[1].z());
            if (dZ / smoothElevationThreshold > d) {
                cut = cut.smoothedZFront(MIN2(cut.length2D() / 2, dZ / smoothElevationThreshold));
            }
        }
        if (!myTo->geometryLike()) {
            cut[-1].setz(myTo->getPosition().z());
            const double d = cut[-1].distanceTo2D(cut[-2]);
            const double dZ = fabs(cut[-1].z() - cut[-2].z());
            if (dZ / smoothElevationThreshold > d) {
                cut = cut.reverse().smoothedZFront(MIN2(cut.length2D() / 2, dZ / smoothElevationThreshold)).reverse();
            }
        }
        cut[0] = myGeom[0];
        cut[-1] = myGeom[-1];
        if (cut != myGeom) {
            myGeom = cut;
            computeLaneShapes();
        }
    }
    for (int i = 0; i < (int)myLanes.size(); i++) {
        myLanes[i].shape = cutAtIntersection(myLanes[i].shape);
    }
    // recompute edge's length as the average of lane lengths
    double avgLength = 0;
    for (int i = 0; i < (int)myLanes.size(); i++) {
        avgLength += myLanes[i].shape.length();
    }
    myLength = avgLength / (double) myLanes.size();
    computeAngle(); // update angles using the finalized node and lane shapes
}
 
 
PositionVector
NBEdge::startShapeAt(const PositionVector& laneShape, const NBNode* startNode, PositionVector nodeShape) {
    if (nodeShape.size() == 0) {
        nodeShape = startNode->getShape();
        nodeShape.closePolygon();
    }
    PositionVector lb = laneShape;
    lb.extrapolate2D(100.0);
    if (nodeShape.intersects(laneShape)) {
        // shape intersects directly
        std::vector<double> pbv = laneShape.intersectsAtLengths2D(nodeShape);
        assert(pbv.size() > 0);
        // ensure that the subpart has at least two points
        double pb = MIN2(laneShape.length2D() - POSITION_EPS - NUMERICAL_EPS, VectorHelper<double>::maxValue(pbv));
        if (pb < 0) {
            return laneShape;
        }
        PositionVector ns = laneShape.getSubpart2D(pb, laneShape.length2D());
        //PositionVector ns = pb < (laneShape.length() - POSITION_EPS) ? laneShape.getSubpart2D(pb, laneShape.length()) : laneShape;
        const double delta = ns[0].z() - laneShape[0].z();
        //std::cout << "a) startNode=" << startNode->getID() << " z=" << startNode->getPosition().z() << " oldZ=" << laneShape[0].z() << " cutZ=" << ns[0].z() << " delta=" << delta << "\n";
        if (fabs(delta) > 2 * POSITION_EPS && (!startNode->geometryLike() || pb < 1)) {
            // make "real" intersections and small intersections flat
            //std::cout << "a) startNode=" << startNode->getID() << " z=" << startNode->getPosition().z() << " oldZ=" << laneShape[0].z() << " cutZ=" << ns[0].z() << " delta=" << delta << "\n";
            ns[0].setz(startNode->getPosition().z());
        }
        assert(ns.size() >= 2);
        return ns;
    } else if (nodeShape.intersects(lb)) {
        // extension of first segment intersects
        std::vector<double> pbv = lb.intersectsAtLengths2D(nodeShape);
        assert(pbv.size() > 0);
        double pb = VectorHelper<double>::maxValue(pbv);
        assert(pb >= 0);
        PositionVector result = laneShape.getSubpartByIndex(1, (int)laneShape.size() - 1);
        Position np = lb.positionAtOffset2D(pb);
        const double delta = np.z() - laneShape[0].z();
        //std::cout << "b) startNode=" << startNode->getID() << " z=" << startNode->getPosition().z() << " oldZ=" << laneShape[0].z() << " cutZ=" << np.z() << " delta=" << delta << "\n";
        if (fabs(delta) > 2 * POSITION_EPS && !startNode->geometryLike()) {
            // avoid z-overshoot when extrapolating
            //std::cout << "b) startNode=" << startNode->getID() << " z=" << startNode->getPosition().z() << " oldZ=" << laneShape[0].z() << " cutZ=" << np.z() << " delta=" << delta << "\n";
            np.setz(startNode->getPosition().z());
        }
        result.push_front_noDoublePos(np);
        return result;
        //if (result.size() >= 2) {
        //    return result;
        //} else {
        //    WRITE_WARNING(error + " (resulting shape is too short)");
        //    return laneShape;
        //}
    } else {
        // could not find proper intersection. Probably the edge is very short
        // and lies within nodeShape
        // @todo enable warning WRITE_WARNING(error + " (laneShape lies within nodeShape)");
        return laneShape;
    }
}
 
 
const PositionVector&
NBEdge::getLaneShape(int i) const {
    return myLanes[i].shape;
}
 
 
void
NBEdge::setLaneSpreadFunction(LaneSpreadFunction spread) {
    myLaneSpreadFunction = spread;
}
 
 
LaneSpreadFunction
NBEdge::getLaneSpreadFunction() const {
    return myLaneSpreadFunction;
}
 
 
void
NBEdge::addGeometryPoint(int index, const Position& p) {
    if (index >= 0) {
        myGeom.insert(myGeom.begin() + index, p);
    } else {
        myGeom.insert(myGeom.end() + index, p);
    }
}
 
 
void
NBEdge::reduceGeometry(const double minDist) {
    // attempt symmetrical removal for forward and backward direction
    // (very important for bidiRail)
    if (myFrom->getID() < myTo->getID()) {
        PositionVector reverse = myGeom.reverse();
        reverse.removeDoublePoints(minDist, true, 0, 0, true);
        myGeom = reverse.reverse();
        for (Lane& lane : myLanes) {
            reverse = lane.customShape.reverse();
            reverse.removeDoublePoints(minDist, true, 0, 0, true);
            lane.customShape = reverse.reverse();
        }
    } else {
        myGeom.removeDoublePoints(minDist, true, 0, 0, true);
        for (Lane& lane : myLanes) {
            lane.customShape.removeDoublePoints(minDist, true, 0, 0, true);
        }
    }
}
 
 
void
NBEdge::checkGeometry(const double maxAngle, bool fixAngle, const double minRadius, bool fix, bool silent) {
    if (myGeom.size() < 3) {
        return;
    }
    //std::cout << "checking geometry of " << getID() << " geometry = " << toString(myGeom) << "\n";
    std::vector<double> angles; // absolute segment angles
    //std::cout << "  absolute angles:";
    for (int i = 0; i < (int)myGeom.size() - 1; ++i) {
        angles.push_back(myGeom.angleAt2D(i));
        //std::cout << " " << angles.back();
    }
    //std::cout << "\n  relative angles: ";
    NBEdge* bidi = const_cast<NBEdge*>(getBidiEdge());
    for (int i = 0; i < (int)angles.size() - 1; ++i) {
        const double relAngle = fabs(GeomHelper::angleDiff(angles[i], angles[i + 1]));
        //std::cout << relAngle << " ";
        if (maxAngle > 0 && relAngle > maxAngle) {
            if (fixAngle) {
                WRITE_MESSAGEF(TL("Removing sharp angle of % degrees at edge '%', segment %."),
                               toString(relAngle), getID(), i);
                myGeom.erase(myGeom.begin() + i + 1);
                if (bidi != nullptr) {
                    bidi->myGeom = myGeom.reverse();
                }
                checkGeometry(maxAngle, fixAngle, minRadius, fix, silent);
                return;
            } else if (!silent) {
                WRITE_WARNINGF(TL("Found angle of % degrees at edge '%', segment %."), RAD2DEG(relAngle), getID(), i);
            }
        }
        if (relAngle < DEG2RAD(1)) {
            continue;
        }
        if (i == 0 || i == (int)angles.size() - 2) {
            const bool start = i == 0;
            const double dist = (start ? myGeom[0].distanceTo2D(myGeom[1]) : myGeom[-2].distanceTo2D(myGeom[-1]));
            const double r = tan(0.5 * (M_PI - relAngle)) * dist;
            //std::cout << (start ? "  start" : "  end") << " length=" << dist << " radius=" << r << "  ";
            if (minRadius > 0 && r < minRadius) {
                if (fix) {
                    WRITE_MESSAGEF(TL("Removing sharp turn with radius % at the % of edge '%'."),
                                   toString(r), start ? TL("start") : TL("end"), getID());
                    myGeom.erase(myGeom.begin() + (start ? 1 : i + 1));
                    if (bidi != nullptr) {
                        bidi->myGeom = myGeom.reverse();
                    }
                    checkGeometry(maxAngle, fixAngle, minRadius, fix, silent);
                    return;
                } else if (!silent) {
                    WRITE_WARNINGF(TL("Found sharp turn with radius % at the % of edge '%'."),
                                   toString(r), start ? TL("start") : TL("end"), getID());
                }
            }
        }
    }
    //std::cout << "\n";
}
 
 
// ----------- Setting and getting connections
bool
NBEdge::addEdge2EdgeConnection(NBEdge* dest, bool overrideRemoval, SVCPermissions permissions) {
    if (myStep == EdgeBuildingStep::INIT_REJECT_CONNECTIONS) {
        return true;
    }
    // check whether the node was merged and now a connection between
    //  not matching edges is tried to be added
    //  This happens f.e. within the ptv VISSIM-example "Beijing"
    if (dest != nullptr && myTo != dest->myFrom) {
        return false;
    }
    if (dest == nullptr) {
        invalidateConnections();
        myConnections.push_back(Connection(-1, dest, -1));
        myStep = EdgeBuildingStep::LANES2LANES_USER;
    } else if (find_if(myConnections.begin(), myConnections.end(), connections_toedge_finder(dest)) == myConnections.end()) {
        myConnections.push_back(Connection(-1, dest, -1));
        myConnections.back().permissions = permissions;
    }
    if (overrideRemoval) {
        // override earlier delete decision
        for (std::vector<Connection>::iterator it = myConnectionsToDelete.begin(); it != myConnectionsToDelete.end();) {
            if (it->toEdge == dest) {
                it = myConnectionsToDelete.erase(it);
            } else {
                it++;
            }
        }
    }
    if (myStep < EdgeBuildingStep::EDGE2EDGES) {
        myStep = EdgeBuildingStep::EDGE2EDGES;
    }
    return true;
}
 
 
bool
NBEdge::addLane2LaneConnection(int from, NBEdge* dest,
                               int toLane, Lane2LaneInfoType type,
                               bool mayUseSameDestination,
                               bool mayDefinitelyPass,
                               KeepClear keepClear,
                               double contPos,
                               double visibility,
                               double speed,
                               double friction,
                               double length,
                               const PositionVector& customShape,
                               bool uncontrolled,
                               SVCPermissions permissions,
                               bool indirectLeft,
                               const std::string& edgeType,
                               SVCPermissions changeLeft,
                               SVCPermissions changeRight,
                               bool postProcess) {
    if (myStep == EdgeBuildingStep::INIT_REJECT_CONNECTIONS) {
        return true;
    }
    // check whether the node was merged and now a connection between
    //  not matching edges is tried to be added
    //  This happens f.e. within the ptv VISSIM-example "Beijing"
    if (myTo != dest->myFrom) {
        return false;
    }
    if (!addEdge2EdgeConnection(dest)) {
        return false;
    }
    return setConnection(from, dest, toLane, type, mayUseSameDestination, mayDefinitelyPass, keepClear, contPos, visibility, speed, friction, length,
                         customShape, uncontrolled, permissions, indirectLeft, edgeType, changeLeft, changeRight, postProcess);
}
 
 
bool
NBEdge::addLane2LaneConnections(int fromLane,
                                NBEdge* dest, int toLane,
                                int no, Lane2LaneInfoType type,
                                bool invalidatePrevious,
                                bool mayDefinitelyPass) {
    if (invalidatePrevious) {
        invalidateConnections(true);
    }
    bool ok = true;
    for (int i = 0; i < no && ok; i++) {
        ok &= addLane2LaneConnection(fromLane + i, dest, toLane + i, type, false, mayDefinitelyPass);
    }
    return ok;
}
 
 
bool
NBEdge::setConnection(int lane, NBEdge* destEdge,
                      int destLane, Lane2LaneInfoType type,
                      bool mayUseSameDestination,
                      bool mayDefinitelyPass,
                      KeepClear keepClear,
                      double contPos,
                      double visibility,
                      double speed,
                      double friction,
                      double length,
                      const PositionVector& customShape,
                      bool uncontrolled,
                      SVCPermissions permissions,
                      bool indirectLeft,
                      const std::string& edgeType,
                      SVCPermissions changeLeft,
                      SVCPermissions changeRight,
                      bool postProcess) {
    if (myStep == EdgeBuildingStep::INIT_REJECT_CONNECTIONS) {
        return false;
    }
    // some kind of a misbehaviour which may occure when the junction's outgoing
    //  edge priorities were not properly computed, what may happen due to
    //  an incomplete or not proper input
    // what happens is that under some circumstances a single lane may set to
    //  be approached more than once by the one of our lanes.
    //  This must not be!
    // we test whether it is the case and do nothing if so - the connection
    //  will be refused
    //
    if (!mayUseSameDestination && hasConnectionTo(destEdge, destLane)) {
        return false;
    }
    if (find_if(myConnections.begin(), myConnections.end(), connections_finder(lane, destEdge, destLane)) != myConnections.end()) {
        return true;
    }
    if ((int)myLanes.size() <= lane || destEdge->getNumLanes() <= (int)destLane) {
        // problem might be corrigible in post-processing
        WRITE_WARNINGF(TL("Could not set connection from '%' to '%'."), getLaneID(lane), destEdge->getLaneID(destLane));
        return false;
    }
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end();) {
        if ((*i).toEdge == destEdge && ((*i).fromLane == -1 || (*i).toLane == -1)) {
            if (permissions == SVC_UNSPECIFIED) {
                // @note: in case we were to add multiple connections from the
                // same lane the second one wouldn't get the special permissions!
                permissions = (*i).permissions;
            }
            i = myConnections.erase(i);
        } else {
            ++i;
        }
    }
    myConnections.push_back(Connection(lane, destEdge, destLane));
    if (mayDefinitelyPass) {
        myConnections.back().mayDefinitelyPass = true;
    }
    myConnections.back().keepClear = keepClear;
    myConnections.back().contPos = contPos;
    myConnections.back().visibility = visibility;
    myConnections.back().permissions = permissions;
    myConnections.back().indirectLeft = indirectLeft;
    myConnections.back().edgeType = edgeType;
    myConnections.back().changeLeft = changeLeft;
    myConnections.back().changeRight = changeRight;
    myConnections.back().speed = speed;
    myConnections.back().friction = friction;
    myConnections.back().customLength = length;
    myConnections.back().customShape = customShape;
    myConnections.back().uncontrolled = uncontrolled;
    if (type == Lane2LaneInfoType::USER) {
        myStep = EdgeBuildingStep::LANES2LANES_USER;
    } else {
        // check whether we have to take another look at it later
        if (type == Lane2LaneInfoType::COMPUTED) {
            // yes, the connection was set using an algorithm which requires a recheck
            myStep = EdgeBuildingStep::LANES2LANES_RECHECK;
        } else {
            // ok, let's only not recheck it if we did no add something that has to be rechecked
            if (myStep != EdgeBuildingStep::LANES2LANES_RECHECK) {
                myStep = EdgeBuildingStep::LANES2LANES_DONE;
            }
        }
    }
    if (postProcess) {
        // override earlier delete decision
        for (std::vector<Connection>::iterator it = myConnectionsToDelete.begin(); it != myConnectionsToDelete.end();) {
            if ((it->fromLane < 0 || it->fromLane == lane)
                    && (it->toEdge == nullptr || it->toEdge == destEdge)
                    && (it->toLane < 0 || it->toLane == destLane)) {
                it = myConnectionsToDelete.erase(it);
            } else {
                it++;
            }
        }
    }
    return true;
}
 
 
std::vector<NBEdge::Connection>
NBEdge::getConnectionsFromLane(int lane, const NBEdge* to, int toLane) const {
    std::vector<NBEdge::Connection> ret;
    for (const Connection& c : myConnections) {
        if ((lane < 0 || c.fromLane == lane)
                && (to == nullptr || to == c.toEdge)
                && (toLane < 0 || toLane == c.toLane)) {
            ret.push_back(c);
        }
    }
    return ret;
}
 
 
const NBEdge::Connection&
NBEdge::getConnection(int fromLane, const NBEdge* to, int toLane) const {
    for (const Connection& c : myConnections) {
        if (c.fromLane == fromLane && c.toEdge == to && c.toLane == toLane) {
            return c;
        }
    }
    throw ProcessError("Connection from " + getID() + "_" + toString(fromLane)
                       + " to " + to->getID() + "_" + toString(toLane) + " not found");
}
 
 
NBEdge::Connection&
NBEdge::getConnectionRef(int fromLane, const NBEdge* to, int toLane) {
    for (Connection& c : myConnections) {
        if (c.fromLane == fromLane && c.toEdge == to && c.toLane == toLane) {
            return c;
        }
    }
    throw ProcessError("Connection from " + getID() + "_" + toString(fromLane)
                       + " to " + to->getID() + "_" + toString(toLane) + " not found");
}
 
 
bool
NBEdge::hasConnectionTo(const NBEdge* destEdge, int destLane, int fromLane) const {
    return destEdge != nullptr && find_if(myConnections.begin(), myConnections.end(), connections_toedgelane_finder(destEdge, destLane, fromLane)) != myConnections.end();
}
 
 
bool
NBEdge::isConnectedTo(const NBEdge* e, const bool ignoreTurnaround) const {
    if (!ignoreTurnaround && (e == myTurnDestination)) {
        return true;
    }
    return
        find_if(myConnections.begin(), myConnections.end(), connections_toedge_finder(e))
        !=
        myConnections.end();
 
}
 
 
const EdgeVector*
NBEdge::getConnectedSorted() {
    // check whether connections exist and if not, use edges from the node
    EdgeVector outgoing;
    if (myConnections.size() == 0) {
        outgoing = myTo->getOutgoingEdges();
    } else {
        for (std::vector<Connection>::const_iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
            if (find(outgoing.begin(), outgoing.end(), (*i).toEdge) == outgoing.end()) {
                outgoing.push_back((*i).toEdge);
            }
        }
    }
    for (std::vector<Connection>::iterator it = myConnectionsToDelete.begin(); it != myConnectionsToDelete.end(); ++it) {
        if (it->fromLane < 0 && it->toLane < 0) {
            // found an edge that shall not be connected
            EdgeVector::iterator forbidden = std::find(outgoing.begin(), outgoing.end(), it->toEdge);
            if (forbidden != outgoing.end()) {
                outgoing.erase(forbidden);
            }
        }
    }
    // allocate the sorted container
    int size = (int) outgoing.size();
    EdgeVector* edges = new EdgeVector();
    edges->reserve(size);
    for (EdgeVector::const_iterator i = outgoing.begin(); i != outgoing.end(); i++) {
        NBEdge* outedge = *i;
        if (outedge != nullptr && outedge != myTurnDestination) {
            edges->push_back(outedge);
        }
    }
    std::sort(edges->begin(), edges->end(), NBContHelper::relative_outgoing_edge_sorter(this));
    return edges;
}
 
 
EdgeVector
NBEdge::getConnectedEdges() const {
    EdgeVector ret;
    for (std::vector<Connection>::const_iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
        if (find(ret.begin(), ret.end(), (*i).toEdge) == ret.end()) {
            ret.push_back((*i).toEdge);
        }
    }
    return ret;
}
 
 
EdgeVector
NBEdge::getIncomingEdges() const {
    EdgeVector ret;
    const EdgeVector& candidates = myFrom->getIncomingEdges();
    for (EdgeVector::const_iterator i = candidates.begin(); i != candidates.end(); i++) {
        if ((*i)->isConnectedTo(this)) {
            ret.push_back(*i);
        }
    }
    return ret;
}
 
 
std::vector<int>
NBEdge::getConnectionLanes(NBEdge* currentOutgoing, bool withBikes) const {
    std::vector<int> ret;
    if (currentOutgoing != myTurnDestination) {
        for (const Connection& c : myConnections) {
            if (c.toEdge == currentOutgoing && (withBikes || getPermissions(c.fromLane) != SVC_BICYCLE)) {
                ret.push_back(c.fromLane);
            }
        }
    }
    return ret;
}
 
 
void
NBEdge::sortOutgoingConnectionsByAngle() {
    sort(myConnections.begin(), myConnections.end(), connections_relative_edgelane_sorter(this));
}
 
 
void
NBEdge::sortOutgoingConnectionsByIndex() {
    sort(myConnections.begin(), myConnections.end(), connections_sorter);
}
 
 
void
NBEdge::remapConnections(const EdgeVector& incoming) {
    EdgeVector connected = getConnectedEdges();
    for (EdgeVector::const_iterator i = incoming.begin(); i != incoming.end(); i++) {
        NBEdge* inc = *i;
        // We have to do this
        inc->myStep = EdgeBuildingStep::EDGE2EDGES;
        // add all connections
        for (EdgeVector::iterator j = connected.begin(); j != connected.end(); j++) {
            inc->addEdge2EdgeConnection(*j);
        }
        inc->removeFromConnections(this);
    }
}
 
 
void
NBEdge::removeFromConnections(NBEdge* toEdge, int fromLane, int toLane, bool tryLater, const bool adaptToLaneRemoval,
                              const bool keepPossibleTurns) {
    // remove from "myConnections"
    const int fromLaneRemoved = adaptToLaneRemoval && fromLane >= 0 ? fromLane : -1;
    const int toLaneRemoved = adaptToLaneRemoval && toLane >= 0 ? toLane : -1;
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end();) {
        Connection& c = *i;
        if ((toEdge == nullptr || c.toEdge == toEdge)
                && (fromLane < 0 || c.fromLane == fromLane)
                && (toLane < 0 || c.toLane == toLane)) {
            if (myTo->isTLControlled()) {
                std::set<NBTrafficLightDefinition*> tldefs = myTo->getControllingTLS();
                for (std::set<NBTrafficLightDefinition*>::iterator it = tldefs.begin(); it != tldefs.end(); it++) {
                    (*it)->removeConnection(NBConnection(this, c.fromLane, c.toEdge, c.toLane));
                }
            }
            i = myConnections.erase(i);
            tryLater = false;
        } else {
            if (fromLaneRemoved >= 0 && c.fromLane > fromLaneRemoved) {
                if (myTo->isTLControlled()) {
                    std::set<NBTrafficLightDefinition*> tldefs = myTo->getControllingTLS();
                    for (std::set<NBTrafficLightDefinition*>::iterator it = tldefs.begin(); it != tldefs.end(); it++) {
                        for (NBConnectionVector::iterator tlcon = (*it)->getControlledLinks().begin(); tlcon != (*it)->getControlledLinks().end(); ++tlcon) {
                            NBConnection& tc = *tlcon;
                            if (tc.getTo() == c.toEdge && tc.getFromLane() == c.fromLane && tc.getToLane() == c.toLane) {
                                tc.shiftLaneIndex(this, -1);
                            }
                        }
                    }
                }
                //std::cout << getID() << " removeFromConnections fromLane=" << fromLane << " to=" << Named::getIDSecure(toEdge) << " toLane=" << toLane << " reduceFromLane=" << c.fromLane << " (to=" << c.toLane << ")\n";
                c.fromLane--;
            }
            if (toLaneRemoved >= 0 && c.toLane > toLaneRemoved && (toEdge == nullptr || c.toEdge == toEdge)) {
                //std::cout << getID() << " removeFromConnections fromLane=" << fromLane << " to=" << Named::getIDSecure(toEdge) << " toLane=" << toLane << " reduceToLane=" << c.toLane << " (from=" << c.fromLane << ")\n";
                c.toLane--;
            }
            ++i;
        }
    }
    // check whether it was the turn destination
    if (myTurnDestination == toEdge && fromLane < 0) {
        myTurnDestination = nullptr;
    }
    if (myPossibleTurnDestination == toEdge && fromLane < 0 && !keepPossibleTurns) {
        myPossibleTurnDestination = nullptr;
    }
    if (tryLater) {
        myConnectionsToDelete.push_back(Connection(fromLane, toEdge, toLane));
#ifdef DEBUG_CONNECTION_GUESSING
        if (DEBUGCOND) {
            std::cout << "removeFromConnections " << getID() << "_" << fromLane << "->" << toEdge->getID() << "_" << toLane << "\n";
            for (Connection& c : myConnections) {
                std::cout << "  conn " << c.getDescription(this) << "\n";
            }
            for (Connection& c : myConnectionsToDelete) {
                std::cout << "  connToDelete " << c.getDescription(this) << "\n";
            }
        }
#endif
    }
}
 
 
bool
NBEdge::removeFromConnections(const NBEdge::Connection& connectionToRemove) {
    // iterate over connections
    for (auto i = myConnections.begin(); i !=  myConnections.end(); i++) {
        if ((i->toEdge == connectionToRemove.toEdge) && (i->fromLane == connectionToRemove.fromLane) && (i->toLane == connectionToRemove.toLane)) {
            // remove connection
            myConnections.erase(i);
            return true;
        }
    }
    // assert(false);
    return false;
}
 
 
void
NBEdge::invalidateConnections(bool reallowSetting) {
    myTurnDestination = nullptr;
    myConnections.clear();
    if (reallowSetting) {
        myStep = EdgeBuildingStep::INIT;
    } else {
        myStep = EdgeBuildingStep::INIT_REJECT_CONNECTIONS;
    }
}
 
 
void
NBEdge::replaceInConnections(NBEdge* which, NBEdge* by, int laneOff) {
    // replace in "_connectedEdges"
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
        if ((*i).toEdge == which) {
            (*i).toEdge = by;
            (*i).toLane += laneOff;
        }
    }
    // check whether it was the turn destination
    if (myTurnDestination == which) {
        myTurnDestination = by;
    }
}
 
void
NBEdge::replaceInConnections(NBEdge* which, const std::vector<NBEdge::Connection>& origConns) {
    std::map<int, int> laneMap;
    int minLane = -1;
    int maxLane = -1;
    // get lanes used to approach the edge to remap
    bool wasConnected = false;
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
        if ((*i).toEdge != which) {
            continue;
        }
        wasConnected = true;
        if ((*i).fromLane != -1) {
            int fromLane = (*i).fromLane;
            laneMap[(*i).toLane] = fromLane;
            if (minLane == -1 || minLane > fromLane) {
                minLane = fromLane;
            }
            if (maxLane == -1 || maxLane < fromLane) {
                maxLane = fromLane;
            }
        }
    }
    if (!wasConnected) {
        return;
    }
    // add new connections
    std::vector<NBEdge::Connection> conns = origConns;
    EdgeVector origTargets = getSuccessors();
    for (std::vector<NBEdge::Connection>::iterator i = conns.begin(); i != conns.end(); ++i) {
        if ((*i).toEdge == which || (*i).toEdge == this
                // if we already have connections to the target edge, do not add new ones as they are probably from a circular replacement
                || std::find(origTargets.begin(), origTargets.end(), (*i).toEdge) != origTargets.end()) {
#ifdef DEBUG_REPLACECONNECTION
            if (DEBUGCOND) {
                std::cout << " replaceInConnections edge=" << getID() << " which=" << which->getID()
                          << " origTargets=" << toString(origTargets) << " newTarget=" << i->toEdge->getID() << " skipped\n";
            }
#endif
            continue;
        }
        if (which->getStep() == EdgeBuildingStep::EDGE2EDGES) {
            // do not set lane-level connections
            replaceInConnections(which, (*i).toEdge, 0);
            continue;
        }
        int fromLane = (*i).fromLane;
        int toUse = -1;
        if (laneMap.find(fromLane) == laneMap.end()) {
            if (fromLane >= 0 && fromLane <= minLane) {
                toUse = minLane;
                // patch laneMap to avoid crossed-over connections
                for (auto& item : laneMap) {
                    if (item.first < fromLane) {
                        item.second = MIN2(item.second, minLane);
                    }
                }
            }
            if (fromLane >= 0 && fromLane >= maxLane) {
                toUse = maxLane;
                // patch laneMap to avoid crossed-over connections
                for (auto& item : laneMap) {
                    if (item.first > fromLane) {
                        item.second = MAX2(item.second, maxLane);
                    }
                }
            }
        } else {
            toUse = laneMap[fromLane];
        }
        if (toUse == -1) {
            toUse = 0;
        }
#ifdef DEBUG_REPLACECONNECTION
        if (DEBUGCOND) {
            std::cout  << " replaceInConnections edge=" << getID() << " which=" << which->getID() << " origTargets=" << toString(origTargets)
                       << " origFrom=" << fromLane << " laneMap=" << joinToString(laneMap, ":", ",") << " minLane=" << minLane << " maxLane=" << maxLane
                       << " newTarget=" << i->toEdge->getID() << " fromLane=" << toUse << " toLane=" << i->toLane << "\n";
        }
#endif
        setConnection(toUse, i->toEdge, i->toLane, Lane2LaneInfoType::COMPUTED, false, i->mayDefinitelyPass, i->keepClear,
                      i->contPos, i->visibility, i->speed, i->friction, i->customLength, i->customShape, i->uncontrolled);
    }
    // remove the remapped edge from connections
    removeFromConnections(which);
}
 
 
void
NBEdge::copyConnectionsFrom(NBEdge* src) {
    myStep = src->myStep;
    myConnections = src->myConnections;
}
 
 
bool
NBEdge::canMoveConnection(const Connection& con, int newFromLane) const {
    // only allow using newFromLane if at least 1 vClass is permitted to use
    // this connection. If the connection shall be moved to a sidewalk, only create the connection if there is no walking area
    const SVCPermissions common = (getPermissions(newFromLane) & con.toEdge->getPermissions(con.toLane));
    return (common > 0 && common != SVC_PEDESTRIAN);
}
 
 
void
NBEdge::moveConnectionToLeft(int lane) {
#ifdef DEBUG_CONNECTION_CHECKING
    std::cout << " moveConnectionToLeft " << getID() << " lane=" << lane << "\n";
#endif
    int index = 0;
    for (int i = 0; i < (int)myConnections.size(); ++i) {
        if (myConnections[i].fromLane == (int)(lane) && canMoveConnection(myConnections[i], lane + 1)) {
            index = i;
        }
    }
    std::vector<Connection>::iterator i = myConnections.begin() + index;
    Connection c = *i;
    myConnections.erase(i);
    setConnection(lane + 1, c.toEdge, c.toLane, Lane2LaneInfoType::VALIDATED, false);
}
 
 
void
NBEdge::moveConnectionToRight(int lane) {
#ifdef DEBUG_CONNECTION_CHECKING
    std::cout << " moveConnectionToRight " << getID() << " lane=" << lane << "\n";
#endif
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
        if ((*i).fromLane == (int)lane && canMoveConnection(*i, lane - 1)) {
            Connection c = *i;
            i = myConnections.erase(i);
            setConnection(lane - 1, c.toEdge, c.toLane, Lane2LaneInfoType::VALIDATED, false);
            return;
        }
    }
}
 
 
double
NBEdge::buildInnerEdges(const NBNode& n, int noInternalNoSplits, int& linkIndex, int& splitIndex) {
    const OptionsCont& oc = OptionsCont::getOptions();
    const int numPoints = oc.getInt("junctions.internal-link-detail");
    const bool joinTurns = oc.getBool("junctions.join-turns");
    const double limitTurnSpeed = oc.getFloat("junctions.limit-turn-speed");
    const double limitTurnSpeedMinAngle = DEG2RAD(oc.getFloat("junctions.limit-turn-speed.min-angle"));
    const double limitTurnSpeedMinAngleRail = DEG2RAD(oc.getFloat("junctions.limit-turn-speed.min-angle.railway"));
    const double limitTurnSpeedWarnStraight = oc.getFloat("junctions.limit-turn-speed.warn.straight");
    const double limitTurnSpeedWarnTurn = oc.getFloat("junctions.limit-turn-speed.warn.turn");
    const bool higherSpeed = oc.getBool("junctions.higher-speed");
    const double interalJunctionVehicleWidth = oc.getFloat("internal-junctions.vehicle-width");
    const double defaultContPos = oc.getFloat("default.connection.cont-pos");
    const bool fromRail = isRailway(getPermissions());
    std::string innerID = ":" + n.getID();
    NBEdge* toEdge = nullptr;
    int edgeIndex = linkIndex;
    int internalLaneIndex = 0;
    int numLanes = 0; // number of lanes that share the same edge
    double lengthSum = 0; // total shape length of all lanes that share the same edge
    int avoidedIntersectingLeftOriginLane = std::numeric_limits<int>::max();
    bool averageLength = true;
    double maxCross = 0.;
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
        Connection& con = *i;
        con.haveVia = false; // reset first since this may be called multiple times
        if (con.toEdge == nullptr) {
            continue;
        }
        LinkDirection dir = n.getDirection(this, con.toEdge);
        const bool isRightTurn = (dir == LinkDirection::RIGHT || dir == LinkDirection::PARTRIGHT);
        const bool isTurn = (isRightTurn || dir == LinkDirection::LEFT || dir == LinkDirection::PARTLEFT);
        // put turning internal lanes on separate edges
        if (con.toEdge != toEdge) {
            // skip indices to keep some correspondence between edge ids and link indices:
            // internalEdgeIndex + internalLaneIndex = linkIndex
            edgeIndex = linkIndex;
            toEdge = con.toEdge;
            internalLaneIndex = 0;
            maxCross = MAX2(maxCross, assignInternalLaneLength(i, numLanes, lengthSum, averageLength));
            numLanes = 0;
            lengthSum = 0;
        }
        averageLength = !isTurn || joinTurns; // legacy behavior
        SVCPermissions conPermissions = getPermissions(con.fromLane) & con.toEdge->getPermissions(con.toLane);
        const int conShapeFlag = (conPermissions & ~SVC_PEDESTRIAN) != 0 ? 0 : NBNode::SCURVE_IGNORE;
        PositionVector shape = n.computeInternalLaneShape(this, con, numPoints, myTo, conShapeFlag);
        std::vector<int> foeInternalLinks;
 
        if (dir != LinkDirection::STRAIGHT && shape.length() < POSITION_EPS && !(isBidiRail() && getTurnDestination(true) == con.toEdge)) {
            WRITE_WARNINGF(TL("Connection '%_%->%_%' is only %m short."), getID(), con.fromLane, con.toEdge->getID(), con.toLane, shape.length());
        }
 
        // crossingPosition, list of foe link indices
        std::pair<double, std::vector<int> > crossingPositions(-1, std::vector<int>());
        std::set<std::string> tmpFoeIncomingLanes;
        if (dir != LinkDirection::STRAIGHT || con.contPos != UNSPECIFIED_CONTPOS) {
            int index = 0;
            std::vector<PositionVector> otherShapes;
            const double width1 = MIN2(interalJunctionVehicleWidth / 2, getLaneWidth(con.fromLane) / 2);
            const double width1OppositeLeft = 0; // using width1 changes a lot of curves even though they are rarely responsible for collisions
            for (const NBEdge* i2 : n.getIncomingEdges()) {
                for (const Connection& k2 : i2->getConnections()) {
                    if (k2.toEdge == nullptr) {
                        continue;
                    }
                    // vehicles are typically less wide than the lane
                    // they drive on but but bicycle lanes should be kept clear for their whole width
                    double width2 = k2.toEdge->getLaneWidth(k2.toLane);
                    if (k2.toEdge->getPermissions(k2.toLane) != SVC_BICYCLE) {
                        width2 *= 0.5;
                    }
                    const bool foes = n.foes(this, con.toEdge, i2, k2.toEdge);
                    LinkDirection dir2 = n.getDirection(i2, k2.toEdge);
                    bool needsCont = !isRailway(conPermissions) && (n.needsCont(this, i2, con, k2) || (con.contPos != UNSPECIFIED_CONTPOS && !con.indirectLeft));
                    const bool avoidIntersectCandidate = !foes && bothLeftTurns(dir, i2, dir2);
                    bool oppositeLeftIntersect = avoidIntersectCandidate && haveIntersection(n, shape, i2, k2, numPoints, width1OppositeLeft, width2);
                    int shapeFlag = 0;
                    SVCPermissions warn = SVCAll & ~(SVC_PEDESTRIAN | SVC_BICYCLE | SVC_DELIVERY | SVC_RAIL_CLASSES);
                    // do not warn if only bicycles, pedestrians or delivery vehicles are involved as this is a typical occurrence
                    if (con.customShape.size() == 0
                            && k2.customShape.size() == 0
                            && (oppositeLeftIntersect || (avoidedIntersectingLeftOriginLane < con.fromLane  && avoidIntersectCandidate))
                            && ((i2->getPermissions(k2.fromLane) & warn) != 0
                                && (k2.toEdge->getPermissions(k2.toLane) & warn) != 0)) {
                        // recompute with different curve parameters (unless
                        // the other connection is "unimportant"
                        shapeFlag = NBNode::AVOID_INTERSECTING_LEFT_TURNS;
                        PositionVector origShape = shape;
                        shape = n.computeInternalLaneShape(this, con, numPoints, myTo, shapeFlag);
                        oppositeLeftIntersect = haveIntersection(n, shape, i2, k2, numPoints, width1OppositeLeft, width2, shapeFlag);
                        if (oppositeLeftIntersect
                                && (conPermissions & (SVCAll & ~(SVC_BICYCLE | SVC_PEDESTRIAN))) == 0) {
                            shape = origShape;
                        } else {
                            // recompute previously computed crossing positions
                            if (avoidedIntersectingLeftOriginLane == std::numeric_limits<int>::max()
                                    || avoidedIntersectingLeftOriginLane < con.fromLane) {
                                for (const PositionVector& otherShape : otherShapes) {
                                    const bool secondIntersection = con.indirectLeft && this == i2 && con.fromLane == k2.fromLane;
                                    const double minDV = firstIntersection(shape, otherShape, width1OppositeLeft, width2,
                                                                           "Could not compute intersection of conflicting internal lanes at node '" + myTo->getID() + "'", secondIntersection);
                                    if (minDV < shape.length() - POSITION_EPS && minDV > POSITION_EPS) { // !!!?
                                        assert(minDV >= 0);
                                        if (crossingPositions.first < 0 || crossingPositions.first > minDV) {
                                            crossingPositions.first = minDV;
                                        }
                                    }
                                }
                            }
                            // make sure connections further to the left do not get a wider angle
                            avoidedIntersectingLeftOriginLane = con.fromLane;
                        }
                    }
                    const bool bothPrio = getJunctionPriority(&n) > 0 && i2->getJunctionPriority(&n) > 0;
                    //std::cout << "n=" << n.getID() << " e1=" << getID() << " prio=" << getJunctionPriority(&n) << " e2=" << i2->getID() << " prio2=" << i2->getJunctionPriority(&n) << " both=" << bothPrio << " bothLeftIntersect=" << bothLeftIntersect(n, shape, dir, i2, k2, numPoints, width2) << " needsCont=" << needsCont << "\n";
                    // the following special case might get obsolete once we have solved #9745
                    const bool isBicycleLeftTurn = k2.indirectLeft || (dir2 == LinkDirection::LEFT && (i2->getPermissions(k2.fromLane) & k2.toEdge->getPermissions(k2.toLane)) == SVC_BICYCLE);
                    // compute the crossing point
                    if ((needsCont || (bothPrio && oppositeLeftIntersect && !isRailway(conPermissions))) && (!con.indirectLeft || dir2 == LinkDirection::STRAIGHT) && !isBicycleLeftTurn) {
                        crossingPositions.second.push_back(index);
                        const PositionVector otherShape = n.computeInternalLaneShape(i2, k2, numPoints, 0, shapeFlag);
                        otherShapes.push_back(otherShape);
                        const bool secondIntersection = con.indirectLeft && this == i2 && con.fromLane == k2.fromLane;
                        const double minDV = firstIntersection(shape, otherShape, width1, width2,
                                                               "Could not compute intersection of conflicting internal lanes at node '" + myTo->getID() + "'", secondIntersection);
                        if (minDV < shape.length() - POSITION_EPS && minDV > POSITION_EPS) { // !!!?
                            assert(minDV >= 0);
                            if (crossingPositions.first < 0 || crossingPositions.first > minDV) {
                                crossingPositions.first = minDV;
                            }
                        }
                    }
                    const bool rightTurnConflict = NBNode::rightTurnConflict(
                                                       this, con.toEdge, con.fromLane, i2, k2.toEdge, k2.fromLane);
                    const bool indirectTurnConflit = con.indirectLeft && this == i2 && dir2 == LinkDirection::STRAIGHT;
                    const bool mergeConflict = myTo->mergeConflict(this, con, i2, k2, true);
                    const bool mergeResponse = myTo->mergeConflict(this, con, i2, k2, false);
                    const bool bidiConflict = myTo->bidiConflict(this, con, i2, k2, true);
                    // compute foe internal lanes
                    if (foes || rightTurnConflict || oppositeLeftIntersect || mergeConflict || indirectTurnConflit || bidiConflict) {
                        foeInternalLinks.push_back(index);
                    }
                    // only warn once per pair of intersecting turns
                    if (oppositeLeftIntersect && getID() > i2->getID()
                            && (getPermissions(con.fromLane) & warn) != 0
                            && (con.toEdge->getPermissions(con.toLane) & warn) != 0
                            && (i2->getPermissions(k2.fromLane) & warn) != 0
                            && (k2.toEdge->getPermissions(k2.toLane) & warn) != 0
                            // do not warn for unregulated nodes
                            && n.getType() != SumoXMLNodeType::NOJUNCTION
                       ) {
                        WRITE_WARNINGF(TL("Intersecting left turns at junction '%' from lane '%' and lane '%' (increase junction radius to avoid this)."),
                                       n.getID(), getLaneID(con.fromLane), i2->getLaneID(k2.fromLane));
                    }
                    // compute foe incoming lanes
                    const bool signalised = hasSignalisedConnectionTo(con.toEdge);
                    if ((n.forbids(i2, k2.toEdge, this, con.toEdge, signalised) || rightTurnConflict || indirectTurnConflit || mergeResponse)
                            && (needsCont || dir == LinkDirection::TURN || (!signalised && this != i2 && !con.indirectLeft))) {
                        tmpFoeIncomingLanes.insert(i2->getID() + "_" + toString(k2.fromLane));
                    }
                    if (bothPrio && oppositeLeftIntersect && getID() < i2->getID()) {
                        //std::cout << " c1=" << con.getDescription(this) << " c2=" << k2.getDescription(i2) << " bothPrio=" << bothPrio << " oppositeLeftIntersect=" << oppositeLeftIntersect << "\n";
                        // break symmetry using edge id
                        // only store link index and resolve actual lane id later (might be multi-lane internal edge)
                        tmpFoeIncomingLanes.insert(":" + toString(index));
                    }
                    index++;
                }
            }
            if (dir == LinkDirection::TURN && crossingPositions.first < 0 && crossingPositions.second.size() != 0 && shape.length() > 2. * POSITION_EPS) {
                // let turnarounds wait in the middle if no other crossing point was found and it has a sensible length
                // (if endOffset is used, the crossing point is in the middle of the part within the junction shape)
                crossingPositions.first = (double)(shape.length() + getEndOffset(con.fromLane)) / 2.;
            }
            // foe pedestrian crossings
            std::vector<NBNode::Crossing*> crossings = n.getCrossings();
            for (auto c : crossings) {
                const NBNode::Crossing& crossing = *c;
                for (EdgeVector::const_iterator it_e = crossing.edges.begin(); it_e != crossing.edges.end(); ++it_e) {
                    const NBEdge* edge = *it_e;
                    // compute foe internal lanes
                    if ((this == edge || con.toEdge == edge) && !isRailway(conPermissions)) {
                        foeInternalLinks.push_back(index);
                        if (con.toEdge == edge &&
                                ((isRightTurn && getJunctionPriority(&n) > 0) || (isTurn && con.tlID != ""))) {
                            // build internal junctions (not for left turns at uncontrolled intersections)
                            PositionVector crossingShape = crossing.shape;
                            crossingShape.extrapolate(5.0); // sometimes shapes miss each other by a small margin
                            const double minDV = firstIntersection(shape, crossingShape, 0, crossing.width / 2);
                            if (minDV < shape.length() - POSITION_EPS && minDV > POSITION_EPS) {
                                assert(minDV >= 0);
                                if (crossingPositions.first < 0 || crossingPositions.first > minDV) {
                                    crossingPositions.first = minDV;
                                }
                            }
                        } else if (this == edge && crossing.priority && !myTo->isTLControlled()) {
                            crossingPositions.first = 0;
                        }
                    }
                }
                index++;
            }
 
        }
        if (con.contPos == UNSPECIFIED_CONTPOS) {
            con.contPos = defaultContPos;
        }
        if (con.contPos != UNSPECIFIED_CONTPOS) {
            // apply custom internal junction position
            if (con.contPos <= 0 || con.contPos >= shape.length()) {
                // disable internal junction
                crossingPositions.first = -1;
            } else {
                // set custom position
                crossingPositions.first = con.contPos;
            }
        }
 
        // @todo compute the maximum speed allowed based on angular velocity
        //  see !!! for an explanation (with a_lat_mean ~0.3)
        /*
        double vmax = (double) 0.3 * (double) 9.80778 *
                        getLaneShape(con.fromLane).back().distanceTo(
                            con.toEdge->getLaneShape(con.toLane).front())
                        / (double) 2.0 / (double) M_PI;
        vmax = MIN2(vmax, ((getSpeed() + con.toEdge->getSpeed()) / (double) 2.0));
        */
        if (con.speed == UNSPECIFIED_SPEED) {
            if (higherSpeed) {
                con.vmax = MAX2(myLanes[con.fromLane].speed, con.toEdge->getLanes()[con.toLane].speed);
            } else {
                con.vmax = (myLanes[con.fromLane].speed + con.toEdge->getLanes()[con.toLane].speed) / (double) 2.0;
            }
            if (limitTurnSpeed > 0) {
                // see [Odhams and Cole, Models of Driver Speed Choice in Curves, 2004]
                const double angleRaw = fabs(GeomHelper::angleDiff(
                                                 getLaneShape(con.fromLane).angleAt2D(-2),
                                                 con.toEdge->getLaneShape(con.toLane).angleAt2D(0)));
                const double angle = MAX2(0.0, angleRaw - (fromRail ? limitTurnSpeedMinAngleRail : limitTurnSpeedMinAngle));
                const double length = shape.length2D();
                // do not trust the radius of tiny junctions
                // formula adapted from [Odhams, Andre and Cole, David, Models of Driver Speed Choice in Curves, 2004]
                if (angle > 0 && length > 1) {
                    // permit higher turning speed on wide lanes
                    const double radius = length / angle + getLaneWidth(con.fromLane) / 4;
                    const double limit = sqrt(limitTurnSpeed * radius);
                    const double reduction = con.vmax - limit;
                    // always treat connctions at roundabout as turns when warning
                    const bool atRoundabout = getJunctionPriority(myTo) == JunctionPriority::ROUNDABOUT || con.toEdge->getJunctionPriority(myFrom) == JunctionPriority::ROUNDABOUT;
                    const LinkDirection dir2 = atRoundabout ? LinkDirection::LEFT : dir;
                    if ((dir2 == LinkDirection::STRAIGHT && reduction > limitTurnSpeedWarnStraight)
                            || (dir2 != LinkDirection::TURN && reduction > limitTurnSpeedWarnTurn)) {
                        std::string dirType = std::string(dir == LinkDirection::STRAIGHT ? "straight" : "turning");
                        if (atRoundabout) {
                            dirType = "roundabout";
                        }
                        WRITE_WARNINGF(TL("Speed of % connection '%' reduced by % due to turning radius of % (length=%, angle=%)."),
                                       dirType, con.getDescription(this), reduction, radius, length, RAD2DEG(angleRaw));
                    }
                    con.vmax = MIN2(con.vmax, limit);
                    // value is saved in <net> attribute. Must be set again when importing from .con.xml
                    // con.speed = con.vmax;
                }
                assert(con.vmax > 0);
                //if (getID() == "-1017000.0.00") {
                //    std::cout << con.getDescription(this) << " angleRaw=" << angleRaw << " angle=" << RAD2DEG(angle) << " length=" << length << " radius=" << length / angle
                //        << " vmaxTurn=" << sqrt(limitTurnSpeed * length / angle) << " vmax=" << con.vmax << "\n";
                //}
            } else if (fromRail && dir == LinkDirection::TURN) {
                con.vmax = 0.01;
            }
        } else {
            con.vmax = con.speed;
        }
        if (con.friction == UNSPECIFIED_FRICTION) {
            con.friction = (myLanes[con.fromLane].friction + con.toEdge->getLanes()[con.toLane].friction) / 2.;
        }
        //
        assert(shape.size() >= 2);
        // get internal splits if any
        con.id = innerID + "_" + toString(edgeIndex);
        const double shapeLength = shape.length();
        double firstLength = shapeLength;
        if (crossingPositions.first > 0 && crossingPositions.first < shapeLength) {
            std::pair<PositionVector, PositionVector> split = shape.splitAt(crossingPositions.first);
            con.shape = split.first;
            con.foeIncomingLanes = std::vector<std::string>(tmpFoeIncomingLanes.begin(), tmpFoeIncomingLanes.end());
            con.foeInternalLinks = foeInternalLinks; // resolve link indices to lane ids later
            if (i != myConnections.begin() && (i - 1)->toEdge == con.toEdge && (i - 1)->haveVia)  {
                --splitIndex;
                con.internalViaLaneIndex = (i - 1)->internalViaLaneIndex + 1;
            }
            con.viaID = innerID + "_" + toString(splitIndex + noInternalNoSplits);
            ++splitIndex;
            con.viaShape = split.second;
            con.haveVia = true;
            firstLength = con.shape.length();
        } else {
            con.shape = shape;
        }
        con.internalLaneIndex = internalLaneIndex;
        ++internalLaneIndex;
        ++linkIndex;
        ++numLanes;
        if (con.customLength != UNSPECIFIED_LOADED_LENGTH) {
            // split length proportionally
            lengthSum += firstLength / shapeLength * con.customLength;
        } else {
            lengthSum += firstLength;
        }
    }
    return MAX2(maxCross, assignInternalLaneLength(myConnections.end(), numLanes, lengthSum, averageLength));
}
 
 
double
NBEdge::assignInternalLaneLength(std::vector<Connection>::iterator i, int numLanes, double lengthSum, bool averageLength) {
    // assign average length to all lanes of the same internal edge if averageLength is set
    // the lengthSum only covers the part up to the first internal junction
    // TODO This code assumes that either all connections in question have a via or none
    double maxCross = 0.;
    assert(i - myConnections.begin() >= numLanes);
    for (int prevIndex = 1; prevIndex <= numLanes; prevIndex++) {
        //std::cout << " con=" << (*(i - prevIndex)).getDescription(this) << " numLanes=" << numLanes << " avgLength=" << lengthSum / numLanes << "\n";
        Connection& c = (*(i - prevIndex));
        const double minLength = c.customLength != UNSPECIFIED_LOADED_LENGTH ? pow(10, -gPrecision) : POSITION_EPS;
        c.length = MAX2(minLength, averageLength ? lengthSum / numLanes : c.shape.length());
        if (c.haveVia) {
            c.viaLength = MAX2(minLength, c.viaShape.length());
        }
        if (c.customLength != UNSPECIFIED_LOADED_LENGTH) {
            if (c.haveVia) {
                // split length proportionally
                const double a = c.viaLength / (c.shape.length() + c.viaLength);
                c.viaLength = MAX2(minLength, a * c.customLength);
            }
            if (!averageLength) {
                c.length = MAX2(minLength, c.customLength - c.viaLength);
            }
        }
        if (c.haveVia) {
            // we need to be able to leave from the internal junction by accelerating from 0
            maxCross = MAX2(maxCross, sqrt(2. * c.viaLength)); // t = sqrt(2*s/a) and we assume 'a' is at least 1 (default value for tram in SUMOVTypeParameter)
        }
        // we need to be able to cross the junction in one go but not if we have an indirect left turn
        if (c.indirectLeft) {
            maxCross = MAX2(maxCross, MAX2(c.length, c.viaLength) / MAX2(c.vmax, NBOwnTLDef::MIN_SPEED_CROSSING_TIME));
        } else {
            maxCross = MAX2(maxCross, (c.length + c.viaLength) / MAX2(c.vmax, NBOwnTLDef::MIN_SPEED_CROSSING_TIME));
        }
    }
    return maxCross;
}
 
 
double
NBEdge::firstIntersection(const PositionVector& v1, const PositionVector& v2, double width1, double width2, const std::string& error, bool secondIntersection) {
    double intersect = std::numeric_limits<double>::max();
    if (v2.length() < POSITION_EPS) {
        return intersect;
    }
    try {
        PositionVector v1Right = v1;
        v1Right.move2side(width1);
 
        PositionVector v1Left = v1;
        v1Left.move2side(-width1);
 
        PositionVector v2Right = v2;
        v2Right.move2side(width2);
 
        PositionVector v2Left = v2;
        v2Left.move2side(-width2);
 
        // intersect all border combinations
        bool skip = secondIntersection;
        for (double cand : v1Left.intersectsAtLengths2D(v2Right)) {
            if (skip) {
                skip = false;
                continue;
            }
            intersect = MIN2(intersect, cand);
        }
        skip = secondIntersection;
        for (double cand : v1Left.intersectsAtLengths2D(v2Left)) {
            if (skip) {
                skip = false;
                continue;
            }
            intersect = MIN2(intersect, cand);
        }
        skip = secondIntersection;
        for (double cand : v1Right.intersectsAtLengths2D(v2Right)) {
            if (skip) {
                skip = false;
                continue;
            }
            intersect = MIN2(intersect, cand);
        }
        skip = secondIntersection;
        for (double cand : v1Right.intersectsAtLengths2D(v2Left)) {
            if (skip) {
                skip = false;
                continue;
            }
            intersect = MIN2(intersect, cand);
        }
    } catch (InvalidArgument&) {
        if (error != "") {
            WRITE_WARNING(error);
        }
    }
    //std::cout << " v1=" << v1 << " v2Right=" << v2Right << " v2Left=" << v2Left << "\n";
    //std::cout << "  intersectsRight=" << toString(v1.intersectsAtLengths2D(v2Right)) << "\n";
    //std::cout << "  intersectsLeft=" << toString(v1.intersectsAtLengths2D(v2Left)) << "\n";
    return intersect;
}
 
 
bool
NBEdge::bothLeftTurns(LinkDirection dir, const NBEdge* otherFrom, LinkDirection dir2) const {
    if (otherFrom == this) {
        // not an opposite pair
        return false;
    }
    return (dir == LinkDirection::LEFT || dir == LinkDirection::PARTLEFT) && (dir2 == LinkDirection::LEFT || dir2 == LinkDirection::PARTLEFT);
}
 
bool
NBEdge::haveIntersection(const NBNode& n, const PositionVector& shape, const NBEdge* otherFrom, const NBEdge::Connection& otherCon, int numPoints,
                         double width1, double width2, int shapeFlag) const {
    const PositionVector otherShape = n.computeInternalLaneShape(otherFrom, otherCon, numPoints, 0, shapeFlag);
    const double minDV = firstIntersection(shape, otherShape, width1, width2);
    return minDV < shape.length() - POSITION_EPS && minDV > POSITION_EPS;
}
 
 
// -----------
int
NBEdge::getJunctionPriority(const NBNode* const node) const {
    if (node == myFrom) {
        return myFromJunctionPriority;
    } else {
        return myToJunctionPriority;
    }
}
 
 
void
NBEdge::setJunctionPriority(const NBNode* const node, int prio) {
    if (node == myFrom) {
        myFromJunctionPriority = prio;
#ifdef DEBUG_JUNCTIONPRIO
        setParameter("fromPrio", toString(prio));
#endif
    } else {
        myToJunctionPriority = prio;
#ifdef DEBUG_JUNCTIONPRIO
        setParameter("toPrio", toString(prio));
#endif
    }
}
 
 
double
NBEdge::getAngleAtNode(const NBNode* const atNode) const {
    if (atNode == myFrom) {
        return GeomHelper::legacyDegree(myGeom.angleAt2D(0));
    }
    assert(atNode == myTo);
    return GeomHelper::legacyDegree(myGeom.angleAt2D(-2));
}
 
 
double
NBEdge::getAngleAtNodeNormalized(const NBNode* const atNode) const {
    double res;
    if (atNode == myFrom) {
        res = GeomHelper::legacyDegree(myGeom.angleAt2D(0)) - 180;
    } else {
        assert(atNode == myTo);
        res = GeomHelper::legacyDegree(myGeom.angleAt2D(-2));
    }
    if (res < 0) {
        res += 360;
    }
    return res;
}
 
 
double
NBEdge::getAngleAtNodeToCenter(const NBNode* const atNode) const {
    if (atNode == myFrom) {
        double res = myStartAngle - 180;
        if (res < 0) {
            res += 360;
        }
        return res;
    } else {
        assert(atNode == myTo);
        return myEndAngle;
    }
}
 
 
void
NBEdge::setTurningDestination(NBEdge* e, bool onlyPossible) {
    if (!onlyPossible) {
        myTurnDestination = e;
    }
    myPossibleTurnDestination = e;
}
 
 
double
NBEdge::getLaneSpeed(int lane) const {
    return myLanes[lane].speed;
}
 
 
double
NBEdge::getLaneFriction(int lane) const {
    return myLanes[lane].friction;
}
 
 
void
NBEdge::resetLaneShapes() {
    computeLaneShapes();
}
 
 
void
NBEdge::updateChangeRestrictions(SVCPermissions ignoring) {
    for (Lane& lane : myLanes) {
        if (lane.changeLeft != SVCAll) {
            lane.changeLeft = ignoring;
        }
        if (lane.changeRight != SVCAll) {
            lane.changeRight = ignoring;
        }
    }
    for (Connection& con : myConnections) {
        if (con.changeLeft != SVC_UNSPECIFIED && con.changeLeft != SVCAll) {
            con.changeLeft = ignoring;
        }
        if (con.changeRight != SVC_UNSPECIFIED && con.changeRight != SVCAll) {
            con.changeRight = ignoring;
        }
    }
}
 
 
void
NBEdge::computeLaneShapes() {
    // vissim needs this
    if (myFrom == myTo) {
        return;
    }
    // compute lane offset, first
    std::vector<double> offsets(myLanes.size(), 0.);
    double offset = 0;
    for (int i = (int)myLanes.size() - 2; i >= 0; --i) {
        offset += (getLaneWidth(i) + getLaneWidth(i + 1)) / 2.;
        offsets[i] = offset;
    }
    if (myLaneSpreadFunction == LaneSpreadFunction::CENTER) {
        double width = 0;
        for (int i = 0; i < (int)myLanes.size(); ++i) {
            width += getLaneWidth(i);
        }
        offset = -width / 2. + getLaneWidth((int)myLanes.size() - 1) / 2.;
    } else {
        double laneWidth = myLanes.back().width != UNSPECIFIED_WIDTH ? myLanes.back().width : SUMO_const_laneWidth;
        offset = laneWidth / 2.;
    }
    if (myLaneSpreadFunction == LaneSpreadFunction::ROADCENTER) {
        for (NBEdge* e : myTo->getOutgoingEdges()) {
            if (e->getToNode() == myFrom && getInnerGeometry().reverse() == e->getInnerGeometry()) {
                offset += (e->getTotalWidth() - getTotalWidth()) / 2;
                break;
            }
        }
    }
 
    for (int i = 0; i < (int)myLanes.size(); ++i) {
        offsets[i] += offset;
    }
 
    // build the shape of each lane
    for (int i = 0; i < (int)myLanes.size(); ++i) {
        if (myLanes[i].customShape.size() != 0) {
            myLanes[i].shape = myLanes[i].customShape;
            continue;
        }
        try {
            myLanes[i].shape = computeLaneShape(i, offsets[i]);
        } catch (InvalidArgument& e) {
            WRITE_WARNINGF(TL("In lane '%': lane shape could not be determined (%)."), getLaneID(i), e.what());
            myLanes[i].shape = myGeom;
        }
    }
}
 
 
PositionVector
NBEdge::computeLaneShape(int lane, double offset) const {
    PositionVector shape = myGeom;
    try {
        shape.move2side(offset);
    } catch (InvalidArgument& e) {
        WRITE_WARNINGF(TL("In lane '%': Could not build shape (%)."), getLaneID(lane), e.what());
    }
    return shape;
}
 
 
void
NBEdge::computeAngle() {
    // taking the angle at the first might be unstable, thus we take the angle
    // at a certain distance. (To compare two edges, additional geometry
    // segments are considered to resolve ambiguities)
    const bool hasFromShape = myFrom->getShape().size() > 0;
    const bool hasToShape = myTo->getShape().size() > 0;
    Position fromCenter = (hasFromShape ? myFrom->getShape().getCentroid() : myFrom->getPosition());
    Position toCenter = (hasToShape ? myTo->getShape().getCentroid() : myTo->getPosition());
    PositionVector shape = myGeom;
    if ((hasFromShape || hasToShape) && getNumLanes() > 0) {
        if (myLaneSpreadFunction == LaneSpreadFunction::RIGHT) {
            shape = myLanes[getNumLanes() - 1].shape ;
        } else {
            shape = myLanes[getNumLanes() / 2].shape;
            if (getNumLanes() % 2 == 0) {
                // there is no center lane. shift to get the center
                shape.move2side(getLaneWidth(getNumLanes() / 2) * 0.5);
            }
        }
    }
 
    // if the junction shape is suspicious we cannot trust the angle to the centroid
    const bool suspiciousFromShape = hasFromShape && (myFrom->getShape().distance2D(shape[0]) > 2 * POSITION_EPS
                                     || myFrom->getShape().around(shape[-1])
                                     || !(myFrom->getShape().around(fromCenter)));
    const bool suspiciousToShape = hasToShape && (myTo->getShape().distance2D(shape[-1]) > 2 * POSITION_EPS
                                   || myTo->getShape().around(shape[0])
                                   || !(myTo->getShape().around(toCenter)));
 
    const double angleLookahead = MIN2(shape.length2D() / 2, ANGLE_LOOKAHEAD);
    const Position referencePosStart = shape.positionAtOffset2D(angleLookahead);
    const Position referencePosEnd = shape.positionAtOffset2D(shape.length2D() - angleLookahead);
 
    myStartAngle = GeomHelper::legacyDegree(fromCenter.angleTo2D(referencePosStart), true);
    const double myStartAngle2 = GeomHelper::legacyDegree(myFrom->getPosition().angleTo2D(referencePosStart), true);
    const double myStartAngle3 = getAngleAtNode(myFrom);
    myEndAngle = GeomHelper::legacyDegree(referencePosEnd.angleTo2D(toCenter), true);
    const double myEndAngle2 = GeomHelper::legacyDegree(referencePosEnd.angleTo2D(myTo->getPosition()), true);
    const double myEndAngle3 = getAngleAtNode(myTo);
 
#ifdef DEBUG_ANGLES
    if (DEBUGCOND) {
        if (suspiciousFromShape) {
            std::cout << "suspiciousFromShape len=" << shape.length() << " startA=" << myStartAngle << " startA2=" << myStartAngle2 << " startA3=" << myStartAngle3
                      << " rel=" << NBHelpers::normRelAngle(myStartAngle, myStartAngle2)
                      << " fromCenter=" << fromCenter
                      << " fromPos=" << myFrom->getPosition()
                      << " refStart=" << referencePosStart
                      << "\n";
        }
        if (suspiciousToShape) {
            std::cout << "suspiciousToShape len=" << shape.length() << "  endA=" << myEndAngle << " endA2=" << myEndAngle2 << " endA3=" << myEndAngle3
                      << " rel=" << NBHelpers::normRelAngle(myEndAngle, myEndAngle2)
                      << " toCenter=" << toCenter
                      << " toPos=" << myTo->getPosition()
                      << " refEnd=" << referencePosEnd
                      << "\n";
        }
    }
#endif
 
    if (suspiciousFromShape && shape.length() > 1) {
        myStartAngle = myStartAngle2;
    } else if (suspiciousToShape && fabs(NBHelpers::normRelAngle(myStartAngle, myStartAngle3)) > 90
               // don't trust footpath angles
               && (getPermissions() & ~SVC_PEDESTRIAN) != 0) {
        myStartAngle = myStartAngle3;
        if (myStartAngle < 0) {
            myStartAngle += 360;
        }
    }
 
    if (suspiciousToShape && shape.length() > 1) {
        myEndAngle = myEndAngle2;
    } else if (suspiciousToShape && fabs(NBHelpers::normRelAngle(myEndAngle, myEndAngle3)) > 90
               // don't trust footpath angles
               && (getPermissions() & ~SVC_PEDESTRIAN) != 0) {
        myEndAngle = myEndAngle3;
        if (myEndAngle < 0) {
            myEndAngle += 360;
        }
    }
 
    myTotalAngle = GeomHelper::legacyDegree(myFrom->getPosition().angleTo2D(myTo->getPosition()), true);
#ifdef DEBUG_ANGLES
    if (DEBUGCOND) std::cout << "computeAngle edge=" << getID()
                                 << " fromCenter=" << fromCenter << " toCenter=" << toCenter
                                 << " refStart=" << referencePosStart << " refEnd=" << referencePosEnd << " shape=" << shape
                                 << " hasFromShape=" << hasFromShape
                                 << " hasToShape=" << hasToShape
                                 << " numLanes=" << getNumLanes()
                                 << " shapeLane=" << getNumLanes() / 2
                                 << " startA=" << myStartAngle << " endA=" << myEndAngle << " totA=" << myTotalAngle << "\n";
#endif
}
 
 
double
NBEdge::getShapeStartAngle() const {
    const double angleLookahead = MIN2(myGeom.length2D() / 2, ANGLE_LOOKAHEAD);
    const Position referencePosStart = myGeom.positionAtOffset2D(angleLookahead);
    return GeomHelper::legacyDegree(myGeom.front().angleTo2D(referencePosStart), true);
}
 
 
double
NBEdge::getShapeEndAngle() const {
    const double angleLookahead = MIN2(myGeom.length2D() / 2, ANGLE_LOOKAHEAD);
    const Position referencePosEnd = myGeom.positionAtOffset2D(myGeom.length2D() - angleLookahead);
    return GeomHelper::legacyDegree(referencePosEnd.angleTo2D(myGeom.back()), true);
}
 
 
bool
NBEdge::hasPermissions() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if ((*i).permissions != SVCAll) {
            return true;
        }
    }
    return false;
}
 
 
bool
NBEdge::hasLaneSpecificPermissions() const {
    std::vector<Lane>::const_iterator i = myLanes.begin();
    SVCPermissions firstLanePermissions = i->permissions;
    i++;
    for (; i != myLanes.end(); ++i) {
        if (i->permissions != firstLanePermissions) {
            return true;
        }
    }
    return false;
}
 
 
bool
NBEdge::hasLaneSpecificSpeed() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if (i->speed != getSpeed()) {
            return true;
        }
    }
    return false;
}
 
bool
NBEdge::hasLaneSpecificFriction() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if (i->friction != myLanes.begin()->friction) {
            return true;
        }
    }
    return false;
}
 
bool
NBEdge::hasLaneSpecificWidth() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if (i->width != myLanes.begin()->width) {
            return true;
        }
    }
    return false;
}
 
 
bool
NBEdge::hasLaneSpecificType() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if (i->type != myLanes.begin()->type) {
            return true;
        }
    }
    return false;
}
 
 
bool
NBEdge::hasLaneSpecificEndOffset() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if (i->endOffset != myLanes.begin()->endOffset) {
            return true;
        }
    }
    return false;
}
 
 
bool
NBEdge::hasLaneSpecificStopOffsets() const {
    for (const auto& lane : myLanes) {
        if (lane.laneStopOffset.isDefined()) {
            if (myEdgeStopOffset.isDefined() || (myEdgeStopOffset != lane.laneStopOffset)) {
                return true;
            }
        }
    }
    return false;
}
 
 
bool
NBEdge::hasAccelLane() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if (i->accelRamp) {
            return true;
        }
    }
    return false;
}
 
 
bool
NBEdge::hasCustomLaneShape() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if (i->customShape.size() > 0) {
            return true;
        }
    }
    return false;
}
 
 
bool
NBEdge::hasLaneParams() const {
    for (std::vector<Lane>::const_iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        if (i->getParametersMap().size() > 0) {
            return true;
        }
    }
    return false;
}
 
bool
NBEdge::prohibitsChanging() const {
    for (const Lane& lane : myLanes) {
        if (lane.changeLeft != SVCAll || lane.changeRight != SVCAll) {
            return true;
        }
    }
    return false;
}
 
bool
NBEdge::needsLaneSpecificOutput() const {
    return (hasLaneSpecificPermissions()
            || hasLaneSpecificSpeed()
            || hasLaneSpecificWidth()
            || hasLaneSpecificType()
            || hasLaneSpecificEndOffset()
            || hasLaneSpecificStopOffsets()
            || hasAccelLane()
            || hasCustomLaneShape()
            || hasLaneParams()
            || prohibitsChanging()
            || (!myLanes.empty() && myLanes.back().oppositeID != ""));
}
 
 
 
bool
NBEdge::computeEdge2Edges(bool noLeftMovers) {
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << "computeEdge2Edges  edge=" << getID() << " step=" << (int)myStep << " noLeftMovers=" << noLeftMovers << "\n";
        for (Connection& c : myConnections) {
            std::cout << "  conn " << c.getDescription(this) << "\n";
        }
        for (Connection& c : myConnectionsToDelete) {
            std::cout << "  connToDelete " << c.getDescription(this) << "\n";
        }
    }
#endif
    // return if this relationship has been build in previous steps or
    //  during the import
    if (myStep >= EdgeBuildingStep::EDGE2EDGES) {
        return true;
    }
    const bool fromRail = isRailway(getPermissions());
    for (NBEdge* out : myTo->getOutgoingEdges()) {
        if (noLeftMovers && myTo->isLeftMover(this, out)) {
            continue;
        }
        // avoid sharp railway turns
        if (fromRail && isRailway(out->getPermissions())) {
            const double angle = fabs(NBHelpers::normRelAngle(getAngleAtNode(myTo), out->getAngleAtNode(myTo)));
            if (angle > 150) {
                continue;
            } else if (angle > 90) {
                // possibly the junction is large enough to achieve a plausible radius:
                const PositionVector& fromShape = myLanes.front().shape;
                const PositionVector& toShape = out->getLanes().front().shape;
                PositionVector shape = myTo->computeSmoothShape(fromShape, toShape, 5, getTurnDestination() == out, 5, 5);
                const double radius = shape.length2D() / DEG2RAD(angle);
                const double minRadius = (getPermissions() & SVC_TRAM) != 0 ? 20 : 80;
                //std::cout << getID() << " to=" << out->getID() << " radius=" << radius << " minRadius=" << minRadius << "\n";
                if (radius < minRadius) {
                    continue;
                }
            }
        }
        if (out == myTurnDestination) {
            // will be added by appendTurnaround
            continue;
        }
        if ((getPermissions() & out->getPermissions() & ~SVC_PEDESTRIAN) == 0) {
            // no common permissions
            continue;
        }
        myConnections.push_back(Connection(-1, out, -1));
    }
    myStep = EdgeBuildingStep::EDGE2EDGES;
    return true;
}
 
 
bool
NBEdge::computeLanes2Edges() {
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << "computeLanes2Edges edge=" << getID() << " step=" << (int)myStep << "\n";
        for (Connection& c : myConnections) {
            std::cout << "  conn " << c.getDescription(this) << "\n";
        }
        for (Connection& c : myConnectionsToDelete) {
            std::cout << "  connToDelete " << c.getDescription(this) << "\n";
        }
    }
#endif
    // return if this relationship has been build in previous steps or
    //  during the import
    if (myStep >= EdgeBuildingStep::LANES2EDGES) {
        return true;
    }
    assert(myStep == EdgeBuildingStep::EDGE2EDGES);
    // get list of possible outgoing edges sorted by direction clockwise
    //  the edge in the backward direction (turnaround) is not in the list
    const EdgeVector* edges = getConnectedSorted();
    if (myConnections.size() != 0 && edges->size() == 0) {
        // dead end per definition!?
        myConnections.clear();
    } else {
        // divide the lanes on reachable edges
        divideOnEdges(edges);
    }
    delete edges;
    myStep = EdgeBuildingStep::LANES2EDGES;
    return true;
}
 
 
std::vector<LinkDirection>
NBEdge::decodeTurnSigns(int turnSigns, int shift) {
    std::vector<LinkDirection> result;
    for (int i = 0; i < 8; i++) {
        // see LinkDirection in SUMOXMLDefinitions.h
        if ((turnSigns & (1 << (i + shift))) != 0) {
            result.push_back((LinkDirection)(1 << i));
        }
    }
    return result;
}
 
void
NBEdge::updateTurnPermissions(SVCPermissions& perm, LinkDirection dir, SVCPermissions spec, std::vector<LinkDirection> dirs) {
    if (dirs.size() > 0) {
        if (std::find(dirs.begin(), dirs.end(), dir) == dirs.end()) {
            perm &= ~spec;
        } else {
            perm |= spec;
        }
    }
}
 
bool
NBEdge::applyTurnSigns() {
#ifdef DEBUG_TURNSIGNS
    std::cout << "applyTurnSigns edge=" << getID() << "\n";
#endif
    // build a map of target edges and lanes
    std::vector<const NBEdge*> targets;
    std::map<const NBEdge*, std::vector<int> > toLaneMap;
    for (const Connection& c : myConnections) {
        if (myLanes[c.fromLane].turnSigns != 0) {
            if (std::find(targets.begin(), targets.end(), c.toEdge) == targets.end()) {
                targets.push_back(c.toEdge);
            }
            toLaneMap[c.toEdge].push_back(c.toLane);
        }
    }
    // might be unsorted due to bike lane connections
    for (auto& item : toLaneMap) {
        std::sort(item.second.begin(), item.second.end());
    }
 
    // check number of distinct signed directions and count the number of signs for each direction
    std::map<LinkDirection, int> signCons;
    int allDirs = 0;
    for (const Lane& lane : myLanes) {
        allDirs |= lane.turnSigns;
        for (LinkDirection dir : decodeTurnSigns(lane.turnSigns)) {
            signCons[dir]++;
        }
    }
    allDirs |= allDirs >> TURN_SIGN_SHIFT_BUS;
    allDirs |= allDirs >> TURN_SIGN_SHIFT_TAXI;
    allDirs |= allDirs >> TURN_SIGN_SHIFT_BICYCLE;
 
    if ((allDirs & (int)LinkDirection::NODIR) != 0) {
        targets.push_back(nullptr); // dead end
    }
 
    SVCPermissions defaultPermissions = SVC_PASSENGER | SVC_DELIVERY;
    // build a mapping from sign directions to targets
    std::vector<LinkDirection> signedDirs = decodeTurnSigns(allDirs);
    std::map<LinkDirection, const NBEdge*> dirMap;
#ifdef DEBUG_TURNSIGNS
    std::cout << "  numDirs=" << signedDirs.size() << " numTargets=" << targets.size() << "\n";
#endif
    if (signedDirs.size() > targets.size()) {
        WRITE_WARNINGF(TL("Cannot apply turn sign information for edge '%' because there are % signed directions but only % targets"), getID(), signedDirs.size(), targets.size());
        return false;
    } else if (signedDirs.size() < targets.size()) {
        // we need to drop some targets (i.e. turn-around)
        // use sumo-directions as a guide
        std::vector<LinkDirection> sumoDirs;
        for (const NBEdge* to : targets) {
            sumoDirs.push_back(myTo->getDirection(this, to));
        }
        // remove targets to the left
        bool checkMore = true;
        while (signedDirs.size() < targets.size() && checkMore) {
            checkMore = false;
            //std::cout << getID() << " sumoDirs=" << joinToString(sumoDirs, ",") << " signedDirs=" << joinToString(signedDirs, ",") << "\n";
            if (sumoDirs.back() != signedDirs.back()) {
                targets.pop_back();
                sumoDirs.pop_back();
                checkMore = true;
            }
        }
        // remove targets to the right
        checkMore = true;
        while (signedDirs.size() < targets.size() && checkMore) {
            checkMore = false;
            if (sumoDirs.front() != signedDirs.front()) {
                targets.erase(targets.begin());
                sumoDirs.erase(sumoDirs.begin());
                checkMore = true;
            }
        }
        // remove targets by permissions
        int i = 0;
        while (signedDirs.size() < targets.size() && i < (int)targets.size()) {
            if (targets[i] != nullptr && (targets[i]->getPermissions() & defaultPermissions) == 0) {
                targets.erase(targets.begin() + i);
                sumoDirs.erase(sumoDirs.begin() + i);
            } else {
                i++;
            }
        }
        if (signedDirs.size() != targets.size()) {
            WRITE_WARNINGF(TL("Cannot apply turn sign information for edge '%' because there are % signed directions and % targets (after target pruning)"), getID(), signedDirs.size(), targets.size());
            return false;
        }
    }
    // directions and connections are both sorted from right to left
    for (int i = 0; i < (int)signedDirs.size(); i++) {
        dirMap[signedDirs[i]] = targets[i];
    }
    // check whether we have enough target lanes for a each signed direction
    for (auto item : signCons) {
        const LinkDirection dir = item.first;
        if (dir == LinkDirection::NODIR) {
            continue;
        }
        const NBEdge* to = dirMap[dir];
        int candidates = to->getNumLanesThatAllow(defaultPermissions, false);
        if (candidates == 0) {
            WRITE_WARNINGF(TL("Cannot apply turn sign information for edge '%' because the target edge '%' has no suitable lanes"), getID(), to->getID());
            return false;
        }
        std::vector<int>& knownTargets = toLaneMap[to];
        if ((int)knownTargets.size() < item.second) {
            if (candidates < item.second) {
                WRITE_WARNINGF(TL("Cannot apply turn sign information for edge '%' because there are % signed connections with directions '%' but target edge '%' has only % suitable lanes"),
                               getID(), item.second, toString(dir), to->getID(), candidates);
                return false;
            }
            int i;
            int iInc;
            int iEnd;
            if (dir > LinkDirection::STRAIGHT) {
                // set more targets on the left
                i = to->getNumLanes() - 1;
                iInc = -1;
                iEnd = -1;
            } else {
                // set more targets on the right
                i = 0;
                iInc = 1;
                iEnd = to->getNumLanes();
            }
            while ((int)knownTargets.size() < item.second && i != iEnd) {
                if ((to->getPermissions(i) & defaultPermissions) != 0) {
                    if (std::find(knownTargets.begin(), knownTargets.end(), i) == knownTargets.end()) {
                        knownTargets.push_back(i);
                    }
                }
                i += iInc;
            }
            if ((int)knownTargets.size() != item.second) {
                WRITE_WARNINGF(TL("Cannot apply turn sign information for edge '%' because not enough target lanes could be determined for direction '%'"), getID(), toString(dir));
                return false;
            }
            std::sort(knownTargets.begin(), knownTargets.end());
        }
    }
    std::map<const NBEdge*, int> toLaneIndex;
    for (int i = 0; i < getNumLanes(); i++) {
        const int turnSigns = myLanes[i].turnSigns;
        // no turnSigns are given for bicycle lanes and sidewalks
        if (turnSigns != 0) {
            // clear existing connections
            for (auto it = myConnections.begin(); it != myConnections.end();) {
                if (it->fromLane == i) {
                    it = myConnections.erase(it);
                } else {
                    it++;
                }
            }
            // add new connections
            int allSigns = (turnSigns
                            | turnSigns >> TURN_SIGN_SHIFT_BUS
                            | turnSigns >> TURN_SIGN_SHIFT_TAXI
                            | turnSigns >> TURN_SIGN_SHIFT_BICYCLE);
            std::vector<LinkDirection> all = decodeTurnSigns(turnSigns);
            std::vector<LinkDirection> bus = decodeTurnSigns(turnSigns, TURN_SIGN_SHIFT_BUS);
            std::vector<LinkDirection> taxi = decodeTurnSigns(turnSigns, TURN_SIGN_SHIFT_TAXI);
            std::vector<LinkDirection> bike = decodeTurnSigns(turnSigns, TURN_SIGN_SHIFT_BICYCLE);
            //std::cout << "  allSigns=" << allSigns << " turnSigns=" << turnSigns << " bus=" << bus.size() << "\n";
            for (LinkDirection dir : decodeTurnSigns(allSigns)) {
                SVCPermissions perm = 0;
                updateTurnPermissions(perm, dir, SVCAll, all);
                updateTurnPermissions(perm, dir, SVC_BUS, bus);
                updateTurnPermissions(perm, dir, SVC_TAXI, taxi);
                updateTurnPermissions(perm, dir, SVC_BICYCLE, bike);
                if (perm == SVCAll) {
                    perm = SVC_UNSPECIFIED;
                }
                //std::cout << "   lane=" << i << " dir=" << toString(dir) << " perm=" << getVehicleClassNames(perm) << "\n";
                NBEdge* to = const_cast<NBEdge*>(dirMap[dir]);
                if (to != nullptr) {
                    if (toLaneIndex.count(to) == 0) {
                        // initialize to rightmost feasible lane
                        SVCPermissions fromP = getPermissions(i);
                        if ((fromP & SVC_PASSENGER) != 0) {
                            // if the source permits passenger traffic, the target should too
                            fromP = SVC_PASSENGER;
                        }
                        int toLane = toLaneMap[to][0];
                        while ((to->getPermissions(toLane) & fromP) == 0 && (toLane + 1 < to->getNumLanes())) {
                            toLane++;
                            /*
                            if (toLane == to->getNumLanes()) {
                                SOFT_ASSERT(false);
                            #ifdef DEBUG_TURNSIGNS
                                std::cout << "  could not find passenger lane for target=" << to->getID() << "\n";
                            #endif
                                return false;
                            }
                            */
                        }
#ifdef DEBUG_TURNSIGNS
                        std::cout << "  target=" << to->getID() << " initial toLane=" << toLane << "\n";
#endif
                        toLaneIndex[to] = toLane;
                    }
                    setConnection(i, to, toLaneIndex[to], Lane2LaneInfoType::VALIDATED, true,
                                  false, KEEPCLEAR_UNSPECIFIED, UNSPECIFIED_CONTPOS,
                                  UNSPECIFIED_VISIBILITY_DISTANCE, UNSPECIFIED_SPEED, UNSPECIFIED_FRICTION,
                                  myDefaultConnectionLength, PositionVector::EMPTY,
                                  UNSPECIFIED_CONNECTION_UNCONTROLLED,
                                  perm);
                    if (toLaneIndex[to] < to->getNumLanes() - 1) {
                        toLaneIndex[to]++;
                    }
                }
            }
        }
    }
    sortOutgoingConnectionsByAngle();
    sortOutgoingConnectionsByIndex();
    return true;
}
 
 
bool
NBEdge::recheckLanes() {
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << "recheckLanes (initial) edge=" << getID() << "\n";
        for (Connection& c : myConnections) {
            std::cout << "  conn " << c.getDescription(this) << "\n";
        }
        for (Connection& c : myConnectionsToDelete) {
            std::cout << "  connToDelete " << c.getDescription(this) << "\n";
        }
    }
#endif
    // check delayed removals
    for (std::vector<Connection>::iterator it = myConnectionsToDelete.begin(); it != myConnectionsToDelete.end(); ++it) {
        removeFromConnections(it->toEdge, it->fromLane, it->toLane, false, false, true);
    }
    std::vector<int> connNumbersPerLane(myLanes.size(), 0);
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end();) {
        if ((*i).toEdge == nullptr || (*i).fromLane < 0 || (*i).toLane < 0) {
            i = myConnections.erase(i);
        } else {
            if ((*i).fromLane >= 0) {
                ++connNumbersPerLane[(*i).fromLane];
            }
            ++i;
        }
    }
    if (myStep != EdgeBuildingStep::LANES2LANES_DONE && myStep != EdgeBuildingStep::LANES2LANES_USER) {
#ifdef DEBUG_TURNSIGNS
        if (myLanes.back().turnSigns != 0) {
            std::cout << getID() << " hasTurnSigns\n";
            if (myTurnSignTarget != myTo->getID()) {
                std::cout << "   tst=" << myTurnSignTarget << " to=" << myTo->getID() << "\n";
            }
        }
#endif
        if (myLanes.back().turnSigns == 0 || myTurnSignTarget != myTo->getID() || !applyTurnSigns()) {
            // check #1:
            // If there is a lane with no connections and any neighbour lane has
            //  more than one connections, try to move one of them.
            // This check is only done for edges which connections were assigned
            //  using the standard algorithm.
            for (int i = 0; i < (int)myLanes.size(); i++) {
                if (connNumbersPerLane[i] == 0 && !isForbidden(getPermissions(i) & ~SVC_PEDESTRIAN)) {
                    // dead-end lane found
                    bool hasDeadEnd = true;
                    // find lane with two connections or more to the right of the current lane
                    for (int i2 = i - 1; hasDeadEnd && i2 >= 0; i2--) {
                        if (getPermissions(i) != getPermissions(i2)) {
                            break;
                        }
                        if (connNumbersPerLane[i2] > 1) {
                            connNumbersPerLane[i2]--;
                            for (int i3 = i2; i3 != i; i3++) {
                                moveConnectionToLeft(i3);
                                sortOutgoingConnectionsByAngle();
                                sortOutgoingConnectionsByIndex();
                            }
                            hasDeadEnd = false;
                        }
                    }
                    if (hasDeadEnd) {
                        // find lane with two connections or more to the left of the current lane
                        for (int i2 = i + 1; hasDeadEnd && i2 < getNumLanes(); i2++) {
                            if (getPermissions(i) != getPermissions(i2)) {
                                break;
                            }
                            if (connNumbersPerLane[i2] > 1) {
                                connNumbersPerLane[i2]--;
                                for (int i3 = i2; i3 != i; i3--) {
                                    moveConnectionToRight(i3);
                                    sortOutgoingConnectionsByAngle();
                                    sortOutgoingConnectionsByIndex();
                                }
                                hasDeadEnd = false;
                            }
                        }
                    }
                    if (hasDeadEnd && myTo->getOutgoingEdges().size() > 1) {
                        int passengerLanes = 0;
                        int passengerTargetLanes = 0;
                        for (const Lane& lane : myLanes) {
                            if ((lane.permissions & SVC_PASSENGER) != 0) {
                                passengerLanes++;
                            }
                        }
                        for (const NBEdge* out : myTo->getOutgoingEdges()) {
                            if (!isTurningDirectionAt(out)) {
                                for (const Lane& lane : out->getLanes()) {
                                    if ((lane.permissions & SVC_PASSENGER) != 0) {
                                        passengerTargetLanes++;
                                    }
                                }
                            }
                        }
                        if (passengerLanes > 0 && passengerLanes <= passengerTargetLanes) {
                            // no need for dead-ends
                            if (i > 0) {
                                // check if a connection to the right has a usable target to the left of its target
                                std::vector<Connection> rightCons = getConnectionsFromLane(i - 1);
                                if (rightCons.size() > 0) {
                                    const Connection& rc = rightCons.back();
                                    NBEdge* to = rc.toEdge;
                                    int toLane = rc.toLane + 1;
                                    if (toLane < to->getNumLanes()
                                            && (getPermissions(i) & ~SVC_PEDESTRIAN & to->getPermissions(toLane)) != 0
                                            && !hasConnectionTo(to, toLane)) {
#ifdef DEBUG_CONNECTION_CHECKING
                                        std::cout << " recheck1 setConnection " << getID() << "_" << i << "->" << to->getID() << "_" << toLane << "\n";
#endif
                                        setConnection(i, to, toLane, Lane2LaneInfoType::COMPUTED);
                                        hasDeadEnd = false;
                                        sortOutgoingConnectionsByAngle();
                                        sortOutgoingConnectionsByIndex();
                                    }
                                    if (hasDeadEnd) {
                                        // check if a connection to the right has a usable target to the right of its target
                                        toLane = rc.toLane - 1;
                                        if (toLane >= 0
                                                && (getPermissions(i) & ~SVC_PEDESTRIAN & to->getPermissions(rc.toLane)) != 0
                                                && (getPermissions(rc.fromLane) & ~SVC_PEDESTRIAN & to->getPermissions(toLane)) != 0
                                                && !hasConnectionTo(to, toLane)) {
                                            // shift the right lane connection target right and connect the dead lane to the old target
                                            getConnectionRef(rc.fromLane, to, rc.toLane).toLane = toLane;
#ifdef DEBUG_CONNECTION_CHECKING
                                            std::cout << " recheck2 setConnection " << getID() << "_" << i << "->" << to->getID() << "_" << (toLane + 1) << "\n";
#endif
                                            setConnection(i, to, toLane + 1, Lane2LaneInfoType::COMPUTED);
                                            hasDeadEnd = false;
                                            sortOutgoingConnectionsByAngle();
                                            sortOutgoingConnectionsByIndex();
                                        }
                                    }
                                }
                            }
                            if (hasDeadEnd && i < getNumLanes() - 1) {
                                // check if a connection to the left has a usable target to the right of its target
                                std::vector<Connection> leftCons = getConnectionsFromLane(i + 1);
                                if (leftCons.size() > 0) {
                                    NBEdge* to = leftCons.front().toEdge;
                                    int toLane = leftCons.front().toLane - 1;
                                    if (toLane >= 0
                                            && (getPermissions(i) & ~SVC_PEDESTRIAN & to->getPermissions(toLane)) != 0
                                            && !hasConnectionTo(to, toLane)) {
#ifdef DEBUG_CONNECTION_CHECKING
                                        std::cout << " recheck3 setConnection " << getID() << "_" << i << "->" << to->getID() << "_" << toLane << "\n";
#endif
                                        setConnection(i, to, toLane, Lane2LaneInfoType::COMPUTED);
                                        hasDeadEnd = false;
                                        sortOutgoingConnectionsByAngle();
                                        sortOutgoingConnectionsByIndex();
                                    }
                                }
                            }
#ifdef ADDITIONAL_WARNINGS
                            if (hasDeadEnd) {
                                WRITE_WARNING("Found dead-end lane " + getLaneID(i));
                            }
#endif
                        }
                    }
                }
            }
            removeInvalidConnections();
        }
    }
    // check involuntary dead end at "real" junctions
    if (getPermissions() != SVC_PEDESTRIAN) {
        if (myConnections.empty() && myTo->getOutgoingEdges().size() > 1 && (getPermissions() & ~SVC_PEDESTRIAN) != 0) {
            WRITE_WARNINGF(TL("Edge '%' is not connected to outgoing edges at junction '%'."), getID(), myTo->getID());
        }
        const EdgeVector& incoming = myFrom->getIncomingEdges();
        if (incoming.size() > 1) {
            for (int i = 0; i < (int)myLanes.size(); i++) {
                if (getPermissions(i) != 0 && getPermissions(i) != SVC_PEDESTRIAN) {
                    bool connected = false;
                    for (std::vector<NBEdge*>::const_iterator in = incoming.begin(); in != incoming.end(); ++in) {
                        if ((*in)->hasConnectionTo(this, i)) {
                            connected = true;
                            break;
                        }
                    }
                    if (!connected) {
                        WRITE_WARNINGF(TL("Lane '%' is not connected from any incoming edge at junction '%'."), getLaneID(i), myFrom->getID());
                    }
                }
            }
        }
    }
    // avoid deadend due to change prohibitions
    if (getNumLanes() > 1 && myConnections.size() > 0) {
        for (int i = 0; i < (int)myLanes.size(); i++) {
            Lane& lane = myLanes[i];
            if ((connNumbersPerLane[i] == 0 || ((lane.accelRamp || (i > 0 && myLanes[i - 1].accelRamp && connNumbersPerLane[i - 1] > 0))
                                                && getSuccessors(SVC_PASSENGER).size() > 1))
                    && getPermissions(i) != SVC_PEDESTRIAN && !isForbidden(getPermissions(i))) {
                const bool forbiddenLeft = lane.changeLeft != SVCAll && lane.changeLeft != SVC_IGNORING && lane.changeLeft != SVC_UNSPECIFIED;
                const bool forbiddenRight = lane.changeRight != SVCAll && lane.changeRight != SVC_IGNORING && lane.changeRight != SVC_UNSPECIFIED;
                if (forbiddenLeft && (i == 0 || forbiddenRight)) {
                    lane.changeLeft = SVC_UNSPECIFIED;
                    WRITE_WARNINGF(TL("Ignoring changeLeft prohibition for '%' to avoid dead-end"), getLaneID(i));
                } else if (forbiddenRight && (i == getNumLanes() - 1 || (i > 0 && myLanes[i - 1].accelRamp))) {
                    lane.changeRight = SVC_UNSPECIFIED;
                    WRITE_WARNINGF(TL("Ignoring changeRight prohibition for '%' to avoid dead-end"), getLaneID(i));
                }
            }
        }
    }
#ifdef ADDITIONAL_WARNINGS
    // check for connections with bad access permissions
    for (const Connection& c : myConnections) {
        SVCPermissions fromP = getPermissions(c.fromLane);
        SVCPermissions toP = c.toEdge->getPermissions(c.toLane);
        if ((fromP & SVC_PASSENGER) != 0
                && toP == SVC_BICYCLE) {
            bool hasAlternative = false;
            for (const Connection& c2 : myConnections) {
                if (c.fromLane == c2.fromLane && c.toEdge == c2.toEdge
                        && (c.toEdge->getPermissions(c2.toLane) & SVC_PASSENGER) != 0) {
                    hasAlternative = true;
                }
            }
            if (!hasAlternative) {
                WRITE_WARNING("Road lane ends on bikeLane for connection " + c.getDescription(this));
            }
        }
    }
 
#endif
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << "recheckLanes (final) edge=" << getID() << "\n";
        for (Connection& c : myConnections) {
            std::cout << "  conn " << c.getDescription(this) << "\n";
        }
    }
#endif
    return true;
}
 
 
void NBEdge::removeInvalidConnections() {
    // check restrictions
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end();) {
        Connection& c = *i;
        const SVCPermissions common = getPermissions(c.fromLane) & c.toEdge->getPermissions(c.toLane);
        if (common == SVC_PEDESTRIAN || getPermissions(c.fromLane) == SVC_PEDESTRIAN) {
            // these are computed in NBNode::buildWalkingAreas
#ifdef DEBUG_CONNECTION_CHECKING
            std::cout << " remove pedCon " << c.getDescription(this) << "\n";
#endif
            i = myConnections.erase(i);
        } else if (common == 0) {
            // no common permissions.
            // try to find a suitable target lane to the right
            const int origToLane = c.toLane;
            c.toLane = -1; // ignore this connection when calling hasConnectionTo
            int toLane = origToLane;
            while (toLane > 0
                    && (getPermissions(c.fromLane) & c.toEdge->getPermissions(toLane)) == 0
                    && !hasConnectionTo(c.toEdge, toLane)
                  ) {
                toLane--;
            }
            if ((getPermissions(c.fromLane) & c.toEdge->getPermissions(toLane)) != 0
                    && !hasConnectionTo(c.toEdge, toLane)) {
                c.toLane = toLane;
                ++i;
            } else {
                // try to find a suitable target lane to the left
                toLane = origToLane;
                while (toLane < (int)c.toEdge->getNumLanes() - 1
                        && (getPermissions(c.fromLane) & c.toEdge->getPermissions(toLane)) == 0
                        && !hasConnectionTo(c.toEdge, toLane)
                      ) {
                    toLane++;
                }
                if ((getPermissions(c.fromLane) & c.toEdge->getPermissions(toLane)) != 0
                        && !hasConnectionTo(c.toEdge, toLane)) {
                    c.toLane = toLane;
                    ++i;
                } else {
                    // no alternative target found
#ifdef DEBUG_CONNECTION_CHECKING
                    std::cout << " remove " << c.getDescription(this) << " with no alternative target\n";
#endif
                    i = myConnections.erase(i);
                }
            }
        } else if (isRailway(getPermissions(c.fromLane)) && isRailway(c.toEdge->getPermissions(c.toLane))
                   && isTurningDirectionAt(c.toEdge))  {
            // do not allow sharp rail turns
#ifdef DEBUG_CONNECTION_CHECKING
            std::cout << " remove " << c.getDescription(this) << " (rail turnaround)\n";
#endif
            i = myConnections.erase(i);
        } else {
            ++i;
        }
    }
}
 
void
NBEdge::divideOnEdges(const EdgeVector* outgoing) {
    if (outgoing->size() == 0) {
        // we have to do this, because the turnaround may have been added before
        myConnections.clear();
        return;
    }
 
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << " divideOnEdges " << getID() << " outgoing=" << toString(*outgoing) << "\n";
    }
#endif
 
    // build connections for miv lanes
    std::vector<int> availableLanes;
    for (int i = 0; i < (int)myLanes.size(); ++i) {
        if ((getPermissions(i) & SVC_PASSENGER) != 0) {
            availableLanes.push_back(i);
        }
    }
    if (availableLanes.size() > 0) {
        divideSelectedLanesOnEdges(outgoing, availableLanes);
    }
    // build connections for miscellaneous further modes (more than bike,peds,bus and without passenger)
    availableLanes.clear();
    for (int i = 0; i < (int)myLanes.size(); ++i) {
        const SVCPermissions perms = getPermissions(i);
        if ((perms & ~(SVC_PEDESTRIAN | SVC_BICYCLE | SVC_BUS)) == 0 || (perms & SVC_PASSENGER) != 0 || isForbidden(perms)) {
            continue;
        }
        availableLanes.push_back(i);
    }
    if (availableLanes.size() > 0) {
        divideSelectedLanesOnEdges(outgoing, availableLanes);
    }
    // build connections for busses from lanes that were excluded in the previous step
    availableLanes.clear();
    for (int i = 0; i < (int)myLanes.size(); ++i) {
        const SVCPermissions perms = getPermissions(i);
        if ((perms & SVC_BUS) == 0 || (perms & ~(SVC_PEDESTRIAN | SVC_BICYCLE | SVC_BUS)) != 0 || (perms & SVC_PASSENGER) != 0) {
            continue;
        }
        availableLanes.push_back(i);
    }
    if (availableLanes.size() > 0) {
        divideSelectedLanesOnEdges(outgoing, availableLanes);
    }
    // build connections for bicycles (possibly combined with pedestrians)
    availableLanes.clear();
    for (int i = 0; i < (int)myLanes.size(); ++i) {
        const SVCPermissions perms = getPermissions(i);
        if (perms != SVC_BICYCLE && perms != (SVC_BICYCLE | SVC_PEDESTRIAN)) {
            continue;
        }
        availableLanes.push_back(i);
    }
    if (availableLanes.size() > 0) {
        divideSelectedLanesOnEdges(outgoing, availableLanes);
    }
    // clean up unassigned fromLanes
    bool explicitTurnaround = false;
    SVCPermissions turnaroundPermissions = SVC_UNSPECIFIED;
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end();) {
        if ((*i).fromLane == -1) {
            if ((*i).toEdge == myTurnDestination && myTurnDestination != nullptr) {
                explicitTurnaround = true;
                turnaroundPermissions = (*i).permissions;
            }
            if ((*i).permissions != SVC_UNSPECIFIED) {
                for (Connection& c : myConnections) {
                    if (c.toLane == -1 && c.toEdge == (*i).toEdge) {
                        // carry over loaded edge2edge permissions
                        c.permissions = (*i).permissions;
                    }
                }
            }
            i = myConnections.erase(i);
        } else {
            ++i;
        }
    }
    if (explicitTurnaround) {
        myConnections.push_back(Connection((int)myLanes.size() - 1, myTurnDestination, myTurnDestination->getNumLanes() - 1));
        myConnections.back().permissions = turnaroundPermissions;
    }
    sortOutgoingConnectionsByIndex();
}
 
 
void
NBEdge::divideSelectedLanesOnEdges(const EdgeVector* outgoing, const std::vector<int>& availableLanes) {
    const std::vector<int>& priorities = prepareEdgePriorities(outgoing, availableLanes);
    if (priorities.empty()) {
        return;
    }
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << "divideSelectedLanesOnEdges " << getID() << " out=" << toString(*outgoing) << " prios=" << toString(priorities) << " avail=" << toString(availableLanes) << "\n";
    }
#endif
    // compute the resulting number of lanes that should be used to reach the following edge
    const int numOutgoing = (int)outgoing->size();
    std::vector<int> resultingLanesFactor;
    resultingLanesFactor.reserve(numOutgoing);
    int minResulting = std::numeric_limits<int>::max();
    for (int i = 0; i < numOutgoing; i++) {
        // res / minResulting will be the number of lanes which are meant to reach the current outgoing edge
        const int res = priorities[i] * (int)availableLanes.size();
        resultingLanesFactor.push_back(res);
        if (minResulting > res && res > 0) {
            // prevent minResulting from becoming 0
            minResulting = res;
        }
    }
    // compute the number of virtual edges
    //  a virtual edge is used as a replacement for a real edge from now on
    //  it shall allow to divide the existing lanes on this structure without
    //  regarding the structure of outgoing edges
    int numVirtual = 0;
    // compute the transition from virtual to real edges
    EdgeVector transition;
    transition.reserve(numOutgoing);
    for (int i = 0; i < numOutgoing; i++) {
        // tmpNum will be the number of connections from this edge to the next edge
        assert(i < (int)resultingLanesFactor.size());
        const int tmpNum = (resultingLanesFactor[i] + minResulting - 1) / minResulting; // integer division rounding up
        numVirtual += tmpNum;
        for (int j = 0; j < tmpNum; j++) {
            transition.push_back((*outgoing)[i]);
        }
    }
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << "   minResulting=" << minResulting << " numVirtual=" << numVirtual << " availLanes=" << toString(availableLanes) << " resLanes=" << toString(resultingLanesFactor) << " transition=" << toString(transition) << "\n";
    }
#endif
 
    // assign lanes to edges
    //  (conversion from virtual to real edges is done)
    ToEdgeConnectionsAdder adder(transition);
    Bresenham::compute(&adder, static_cast<int>(availableLanes.size()), numVirtual);
    const std::map<NBEdge*, std::vector<int> >& l2eConns = adder.getBuiltConnections();
    for (NBEdge* const target : *outgoing) {
        assert(l2eConns.find(target) != l2eConns.end());
        for (const int j : l2eConns.find(target)->second) {
            const int fromIndex = availableLanes[j];
            if ((getPermissions(fromIndex) & target->getPermissions()) == 0) {
                // exclude connection if fromLane and toEdge have no common permissions
                continue;
            }
            if ((getPermissions(fromIndex) & target->getPermissions()) == SVC_PEDESTRIAN) {
                // exclude connection if the only commonly permitted class are pedestrians
                // these connections are later built in NBNode::buildWalkingAreas
                continue;
            }
            // avoid building more connections than the edge has viable lanes (earlier
            // ones have precedence). This is necessary when running divideSelectedLanesOnEdges more than once.
            //    @todo To decide which target lanes are still available we need to do a
            // preliminary lane-to-lane assignment in regard to permissions (rather than to ordering)
            const int numConsToTarget = (int)count_if(myConnections.begin(), myConnections.end(), connections_toedge_finder(target, true));
            int targetLanes = target->getNumLanes();
            if (target->getPermissions(0) == SVC_PEDESTRIAN) {
                --targetLanes;
            }
            if (numConsToTarget >= targetLanes) {
                continue;
            }
            if (myLanes[fromIndex].connectionsDone) {
                // we already have complete information about connections from
                // this lane. do not add anything else
#ifdef DEBUG_CONNECTION_GUESSING
                if (DEBUGCOND) {
                    std::cout << "     connectionsDone from " << getID() << "_" << fromIndex << ": ";
                    for (const Connection& c : getConnectionsFromLane(fromIndex)) {
                        std::cout << c.getDescription(this) << ", ";
                    }
                    std::cout << "\n";
                }
#endif
                continue;
            }
            myConnections.push_back(Connection(fromIndex, target, -1));
#ifdef DEBUG_CONNECTION_GUESSING
            if (DEBUGCOND) {
                std::cout << "     request connection from " << getID() << "_" << fromIndex << " to " << target->getID() << "\n";
            }
#endif
        }
    }
 
    addStraightConnections(outgoing, availableLanes, priorities);
}
 
 
void
NBEdge::addStraightConnections(const EdgeVector* outgoing, const std::vector<int>& availableLanes, const std::vector<int>& priorities) {
    // ensure sufficient straight connections for the (highest-priority) straight target
    const int numOutgoing = (int) outgoing->size();
    NBEdge* target = nullptr;
    NBEdge* rightOfTarget = nullptr;
    NBEdge* leftOfTarget = nullptr;
    int maxPrio = 0;
    for (int i = 0; i < numOutgoing; i++) {
        if (maxPrio < priorities[i]) {
            const LinkDirection dir = myTo->getDirection(this, (*outgoing)[i]);
            if (dir == LinkDirection::STRAIGHT) {
                maxPrio = priorities[i];
                target = (*outgoing)[i];
                rightOfTarget = i == 0 ? outgoing->back() : (*outgoing)[i - 1];
                leftOfTarget = i + 1 == numOutgoing ? outgoing->front() : (*outgoing)[i + 1];
            }
        }
    }
    if (target == nullptr) {
        return;
    }
    int numConsToTarget = (int)count_if(myConnections.begin(), myConnections.end(), connections_toedge_finder(target, true));
    int targetLanes = (int)target->getNumLanes();
    if (target->getPermissions(0) == SVC_PEDESTRIAN) {
        --targetLanes;
    }
    const int numDesiredConsToTarget = MIN2(targetLanes, (int)availableLanes.size());
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) {
        std::cout << "  checking extra lanes for target=" << target->getID() << " cons=" << numConsToTarget << " desired=" << numDesiredConsToTarget << "\n";
    }
#endif
    std::vector<int>::const_iterator it_avail = availableLanes.begin();
    while (numConsToTarget < numDesiredConsToTarget && it_avail != availableLanes.end()) {
        const int fromIndex = *it_avail;
        if (
            // not yet connected
            (count_if(myConnections.begin(), myConnections.end(), connections_finder(fromIndex, target, -1)) == 0)
            // matching permissions
            && ((getPermissions(fromIndex) & target->getPermissions()) != 0)
            // more than pedestrians
            && ((getPermissions(fromIndex) & target->getPermissions()) != SVC_PEDESTRIAN)
            // lane not yet fully defined
            && !myLanes[fromIndex].connectionsDone
        ) {
#ifdef DEBUG_CONNECTION_GUESSING
            if (DEBUGCOND) {
                std::cout << "    candidate from " << getID() << "_" << fromIndex << " to " << target->getID() << "\n";
            }
#endif
            // prevent same-edge conflicts
            if (
                // no outgoing connections to the right from further left
                ((it_avail + 1) == availableLanes.end() || count_if(myConnections.begin(), myConnections.end(), connections_conflict_finder(fromIndex, rightOfTarget, false)) == 0)
                // no outgoing connections to the left from further right
                && (it_avail == availableLanes.begin() || count_if(myConnections.begin(), myConnections.end(), connections_conflict_finder(fromIndex, leftOfTarget, true)) == 0)) {
#ifdef DEBUG_CONNECTION_GUESSING
                if (DEBUGCOND) {
                    std::cout << "     request additional connection from " << getID() << "_" << fromIndex << " to " << target->getID() << "\n";
                }
#endif
                myConnections.push_back(Connection(fromIndex, target, -1));
                numConsToTarget++;
            } else {
#ifdef DEBUG_CONNECTION_GUESSING
                if (DEBUGCOND) std::cout
                            << "     fail check1="
                            << ((it_avail + 1) == availableLanes.end() || count_if(myConnections.begin(), myConnections.end(), connections_conflict_finder(fromIndex, rightOfTarget, false)) == 0)
                            << " check2=" << (it_avail == availableLanes.begin() || count_if(myConnections.begin(), myConnections.end(), connections_conflict_finder(fromIndex, leftOfTarget, true)) == 0)
                            << " rightOfTarget=" << rightOfTarget->getID()
                            << " leftOfTarget=" << leftOfTarget->getID()
                            << "\n";
#endif
 
            }
        }
        ++it_avail;
    }
}
 
 
const std::vector<int>
NBEdge::prepareEdgePriorities(const EdgeVector* outgoing, const std::vector<int>& availableLanes) {
    std::vector<int> priorities;
    MainDirections mainDirections(*outgoing, this, myTo, availableLanes);
    const int dist = mainDirections.getStraightest();
    if (dist == -1) {
        return priorities;
    }
    // copy the priorities first
    priorities.reserve(outgoing->size());
    for (const NBEdge* const out : *outgoing) {
        int prio = NBNode::isTrafficLight(myTo->getType()) ? 0 : out->getJunctionPriority(myTo);
        assert((prio + 1) * 2 > 0);
        prio = (prio + 1) * 2;
        priorities.push_back(prio);
    }
    // when the right turning direction has not a higher priority, divide
    //  the importance by 2 due to the possibility to leave the junction
    //  faster from this lane
#ifdef DEBUG_CONNECTION_GUESSING
    if (DEBUGCOND) std::cout << "  prepareEdgePriorities " << getID()
                                 << " outgoing=" << toString(*outgoing)
                                 << " priorities1=" << toString(priorities)
                                 << " dist=" << dist
                                 << "\n";
#endif
    if (dist != 0 && !mainDirections.includes(MainDirections::Direction::RIGHTMOST)) {
        assert(priorities.size() > 0);
        priorities[0] /= 2;
#ifdef DEBUG_CONNECTION_GUESSING
        if (DEBUGCOND) {
            std::cout << "   priorities2=" << toString(priorities) << "\n";
        }
#endif
    }
    // HEURISTIC:
    // when no higher priority exists, let the forward direction be
    //  the main direction
    if (mainDirections.empty()) {
        assert(dist < (int)priorities.size());
        priorities[dist] *= 2;
#ifdef DEBUG_CONNECTION_GUESSING
        if (DEBUGCOND) {
            std::cout << "   priorities3=" << toString(priorities) << "\n";
        }
#endif
    }
    if (NBNode::isTrafficLight(myTo->getType())) {
        priorities[dist] += 1;
    } else {
        // try to ensure separation of left turns
        if (mainDirections.includes(MainDirections::Direction::RIGHTMOST) && mainDirections.includes(MainDirections::Direction::LEFTMOST)) {
            priorities[0] /= 4;
            priorities[(int)priorities.size() - 1] /= 2;
#ifdef DEBUG_CONNECTION_GUESSING
            if (DEBUGCOND) {
                std::cout << "   priorities6=" << toString(priorities) << "\n";
            }
#endif
        } else if (mainDirections.includes(MainDirections::Direction::RIGHTMOST)
                   && outgoing->size() > 2
                   && availableLanes.size() == 2
                   && (*outgoing)[dist]->getPriority() == (*outgoing)[0]->getPriority()) {
            priorities[0] /= 4;
            priorities.back() /= 2;
#ifdef DEBUG_CONNECTION_GUESSING
            if (DEBUGCOND) {
                std::cout << "   priorities7=" << toString(priorities) << "\n";
            }
#endif
        }
    }
    if (mainDirections.includes(MainDirections::Direction::FORWARD)) {
        if (myLanes.size() > 2) {
            priorities[dist] *= 2;
#ifdef DEBUG_CONNECTION_GUESSING
            if (DEBUGCOND) {
                std::cout << "   priorities4=" << toString(priorities) << "\n";
            }
#endif
        } else {
            priorities[dist] *= 3;
#ifdef DEBUG_CONNECTION_GUESSING
            if (DEBUGCOND) {
                std::cout << "   priorities5=" << toString(priorities) << "\n";
            }
#endif
        }
    }
    return priorities;
}
 
 
void
NBEdge::appendTurnaround(bool noTLSControlled, bool noFringe, bool onlyDeadends, bool onlyTurnlane, bool noGeometryLike, bool checkPermissions) {
    // do nothing if no turnaround is known
    if (myTurnDestination == nullptr || myTo->getType() == SumoXMLNodeType::RAIL_CROSSING) {
        return;
    }
    // do nothing if the destination node is controlled by a tls and no turnarounds
    //  shall be appended for such junctions
    if (noTLSControlled && myTo->isTLControlled()) {
        return;
    }
    if (noFringe && myTo->getFringeType() == FringeType::OUTER) {
        return;
    }
    bool isDeadEnd = true;
    for (const Connection& c : myConnections) {
        if ((c.toEdge->getPermissions(c.toLane)
                & getPermissions(c.fromLane)
                & SVC_PASSENGER) != 0
                || (c.toEdge->getPermissions() & getPermissions()) == getPermissions()) {
            isDeadEnd = false;
            break;
        }
    }
    if (onlyDeadends && !isDeadEnd) {
        return;
    }
    const int fromLane = getFirstAllowedLaneIndex(NBNode::BACKWARD);
    if (onlyTurnlane) {
        for (const Connection& c : getConnectionsFromLane(fromLane)) {
            LinkDirection dir = myTo->getDirection(this, c.toEdge);
            if (dir != LinkDirection::LEFT && dir != LinkDirection::PARTLEFT) {
                return;
            }
        }
    }
    const int toLane = myTurnDestination->getFirstAllowedLaneIndex(NBNode::BACKWARD);
    if (checkPermissions) {
        if ((getPermissions(fromLane) & myTurnDestination->getPermissions(toLane)) == 0) {
            // exclude connection if fromLane and toEdge have no common permissions
            return;
        }
        if ((getPermissions(fromLane) & myTurnDestination->getPermissions(toLane)) == SVC_PEDESTRIAN) {
            // exclude connection if the only commonly permitted class are pedestrians
            // these connections are later built in NBNode::buildWalkingAreas
            return;
        }
    }
    // avoid railway turn-arounds
    if (isRailway(getPermissions() & myTurnDestination->getPermissions())
            && fabs(NBHelpers::normRelAngle(getAngleAtNode(myTo), myTurnDestination->getAngleAtNode(myTo))) > 90) {
        // except at dead-ends on bidi-edges where they model a reversal in train direction
        // @todo #4382: once the network fringe is tagged, it also should not receive turn-arounds)
        if (isBidiRail() && isRailDeadEnd()) {
            // add a slow connection because direction-reversal implies stopping
            setConnection(fromLane, myTurnDestination, toLane, Lane2LaneInfoType::VALIDATED, false, false, KEEPCLEAR_UNSPECIFIED, UNSPECIFIED_CONTPOS, UNSPECIFIED_VISIBILITY_DISTANCE, SUMO_const_haltingSpeed);
            return;
        } else {
            return;
        }
    };
    if (noGeometryLike && !isDeadEnd) {
        // ignore paths and service entrances if this edge is for passenger traffic
        if (myTo->geometryLike() || ((getPermissions() & SVC_PASSENGER) != 0
                                     && !onlyTurnlane
                                     && myTo->geometryLike(
                                         NBEdge::filterByPermissions(myTo->getIncomingEdges(), ~(SVC_BICYCLE | SVC_PEDESTRIAN | SVC_DELIVERY)),
                                         NBEdge::filterByPermissions(myTo->getOutgoingEdges(), ~(SVC_BICYCLE | SVC_PEDESTRIAN | SVC_DELIVERY))))) {
            // make sure the turnDestination has other incoming edges
            EdgeVector turnIncoming = myTurnDestination->getIncomingEdges();
            if (turnIncoming.size() > 1) {
                // this edge is always part of incoming
                return;
            }
        }
    }
    setConnection(fromLane, myTurnDestination, toLane, Lane2LaneInfoType::VALIDATED);
}
 
 
bool
NBEdge::isTurningDirectionAt(const NBEdge* const edge) const {
    // maybe it was already set as the turning direction
    if (edge == myTurnDestination) {
        return true;
    } else if (myTurnDestination != nullptr) {
        // otherwise - it's not if a turning direction exists
        return false;
    }
    return edge == myPossibleTurnDestination;
}
 
 
NBNode*
NBEdge::tryGetNodeAtPosition(double pos, double tolerance) const {
    // return the from-node when the position is at the begin of the edge
    if (pos < tolerance) {
        return myFrom;
    }
    // return the to-node when the position is at the end of the edge
    if (pos > myLength - tolerance) {
        return myTo;
    }
    return nullptr;
}
 
 
void
NBEdge::moveOutgoingConnectionsFrom(NBEdge* e, int laneOff) {
    int lanes = e->getNumLanes();
    for (int i = 0; i < lanes; i++) {
        for (const NBEdge::Connection& el : e->getConnectionsFromLane(i)) {
            assert(el.tlID == "");
            addLane2LaneConnection(i + laneOff, el.toEdge, el.toLane, Lane2LaneInfoType::COMPUTED);
        }
    }
}
 
 
bool
NBEdge::lanesWereAssigned() const {
    return myStep == EdgeBuildingStep::LANES2LANES_DONE || myStep == EdgeBuildingStep::LANES2LANES_USER;
}
 
 
double
NBEdge::getMaxLaneOffset() {
    return SUMO_const_laneWidth * (double)myLanes.size();
}
 
 
bool
NBEdge::mayBeTLSControlled(int fromLane, NBEdge* toEdge, int toLane) const {
    for (const Connection& c : myConnections) {
        if (c.fromLane == fromLane && c.toEdge == toEdge && c.toLane == toLane && c.uncontrolled) {
            return false;
        }
    }
    return true;
}
 
 
bool
NBEdge::setControllingTLInformation(const NBConnection& c, const std::string& tlID) {
    const int fromLane = c.getFromLane();
    NBEdge* toEdge = c.getTo();
    const int toLane = c.getToLane();
    const int tlIndex = c.getTLIndex();
    const int tlIndex2 = c.getTLIndex2();
    // check whether the connection was not set as not to be controled previously
    if (!mayBeTLSControlled(fromLane, toEdge, toLane)) {
        return false;
    }
 
    assert(fromLane < 0 || fromLane < (int) myLanes.size());
    // try to use information about the connections if given
    if (fromLane >= 0 && toLane >= 0) {
        // find the specified connection
        std::vector<Connection>::iterator i =
            find_if(myConnections.begin(), myConnections.end(), connections_finder(fromLane, toEdge, toLane));
        // ok, we have to test this as on the removal of self-loop edges some connections
        //  will be reassigned
        if (i != myConnections.end()) {
            // get the connection
            Connection& connection = *i;
            // set the information about the tl
            connection.tlID = tlID;
            connection.tlLinkIndex = tlIndex;
            connection.tlLinkIndex2 = tlIndex2;
            return true;
        }
    }
    // if the original connection was not found, set the information for all
    //  connections
    int no = 0;
    bool hadError = false;
    for (std::vector<Connection>::iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
        if ((*i).toEdge != toEdge) {
            continue;
        }
        if (fromLane >= 0 && fromLane != (*i).fromLane) {
            continue;
        }
        if (toLane >= 0 && toLane != (*i).toLane) {
            continue;
        }
        if ((*i).tlID == "") {
            (*i).tlID = tlID;
            (*i).tlLinkIndex = tlIndex;
            (*i).tlLinkIndex2 = tlIndex2;
            no++;
        } else {
            if ((*i).tlID != tlID && (*i).tlLinkIndex == tlIndex) {
                WRITE_WARNINGF(TL("The lane '%' on edge '%' already had a traffic light signal."), i->fromLane, getID());
                hadError = true;
            }
        }
    }
    if (hadError && no == 0) {
        WRITE_WARNINGF(TL("Could not set any signal of the tlLogic '%' (unknown group)."), tlID);
    }
    return true;
}
 
 
void
NBEdge::clearControllingTLInformation() {
    for (std::vector<Connection>::iterator it = myConnections.begin(); it != myConnections.end(); it++) {
        it->tlID = "";
    }
}
 
 
PositionVector
NBEdge::getCWBoundaryLine(const NBNode& n) const {
    PositionVector ret;
    int lane;
    if (myFrom == (&n)) {
        // outgoing
        lane = getFirstAllowedLaneIndex(NBNode::FORWARD);
        ret = myLanes[lane].shape;
    } else {
        // incoming
        lane = getFirstAllowedLaneIndex(NBNode::BACKWARD);
        ret = myLanes[lane].shape.reverse();
    }
    ret.move2side(getLaneWidth(lane) / 2.);
    return ret;
}
 
 
PositionVector
NBEdge::getCCWBoundaryLine(const NBNode& n) const {
    PositionVector ret;
    int lane;
    if (myFrom == (&n)) {
        // outgoing
        lane = getFirstAllowedLaneIndex(NBNode::BACKWARD);
        ret = myLanes[lane].shape;
    } else {
        // incoming
        lane = getFirstAllowedLaneIndex(NBNode::FORWARD);
        ret = myLanes[lane].shape.reverse();
    }
    ret.move2side(-getLaneWidth(lane) / 2.);
    return ret;
}
 
 
bool
NBEdge::expandableBy(NBEdge* possContinuation, std::string& reason) const {
    // ok, the number of lanes must match
    if (myLanes.size() != possContinuation->myLanes.size()) {
        reason = "laneNumber";
        return false;
    }
    // do not create self loops
    if (myFrom == possContinuation->myTo) {
        reason = "loop";
        return false;
    }
    // conserve bidi-rails
    if (isBidiRail() != possContinuation->isBidiRail()) {
        reason = "bidi-rail";
        return false;
    }
    // also, check whether the connections - if any exit do allow to join
    //  both edges
    // This edge must have a one-to-one connection to the following lanes
    switch (myStep) {
        case EdgeBuildingStep::INIT_REJECT_CONNECTIONS:
            break;
        case EdgeBuildingStep::INIT:
            break;
        case EdgeBuildingStep::EDGE2EDGES: {
            // the following edge must be connected
            const EdgeVector& conn = getConnectedEdges();
            if (find(conn.begin(), conn.end(), possContinuation) == conn.end()) {
                reason = "disconnected";
                return false;
            }
        }
        break;
        case EdgeBuildingStep::LANES2EDGES:
        case EdgeBuildingStep::LANES2LANES_RECHECK:
        case EdgeBuildingStep::LANES2LANES_DONE:
        case EdgeBuildingStep::LANES2LANES_USER: {
            // the possible continuation must be connected
            if (find_if(myConnections.begin(), myConnections.end(), connections_toedge_finder(possContinuation)) == myConnections.end()) {
                reason = "disconnected";
                return false;
            }
            // all lanes must go to the possible continuation
            std::vector<int> conns = getConnectionLanes(possContinuation);
            const int offset = MAX2(0, getFirstNonPedestrianLaneIndex(NBNode::FORWARD, true));
            if (conns.size() < myLanes.size() - offset) {
                reason = "some lanes disconnected";
                return false;
            }
        }
        break;
        default:
            break;
    }
    const double minLength = OptionsCont::getOptions().getFloat("geometry.remove.min-length");
    if (minLength > 0 && (possContinuation->getLoadedLength() < minLength || getLoadedLength() < minLength)) {
        return true;
    }
    const double maxJunctionSize = OptionsCont::getOptions().getFloat("geometry.remove.max-junction-size");
    if (maxJunctionSize >= 0) {
        const double junctionSize = myGeom.back().distanceTo2D(possContinuation->myGeom.front());
        if (junctionSize > maxJunctionSize + POSITION_EPS) {
            reason = "junction size (" + toString(junctionSize) + ") > max-junction-size (" + toString(maxJunctionSize) + ")";
            return false;
        }
    }
    // the priority, too (?)
    if (getPriority() != possContinuation->getPriority()) {
        reason = "priority";
        return false;
    }
    // the speed allowed
    if (mySpeed != possContinuation->mySpeed) {
        reason = "speed";
        return false;
    }
    // spreadtype should match or it will look ugly
    if (myLaneSpreadFunction != possContinuation->myLaneSpreadFunction) {
        reason = "spreadType";
        return false;
    }
    // matching lanes must have identical properties
    for (int i = 0; i < (int)myLanes.size(); i++) {
        if (myLanes[i].speed != possContinuation->myLanes[i].speed) {
            reason = "lane " + toString(i) + " speed";
            return false;
        } else if (myLanes[i].permissions != possContinuation->myLanes[i].permissions) {
            reason = "lane " + toString(i) + " permissions";
            return false;
        } else if (myLanes[i].changeLeft != possContinuation->myLanes[i].changeLeft || myLanes[i].changeRight != possContinuation->myLanes[i].changeRight) {
            reason = "lane " + toString(i) + " change restrictions";
            return false;
        } else if (myLanes[i].width != possContinuation->myLanes[i].width &&
                   fabs(myLanes[i].width - possContinuation->myLanes[i].width) > OptionsCont::getOptions().getFloat("geometry.remove.width-tolerance")) {
            reason = "lane " + toString(i) + " width";
            return false;
        }
    }
    // if given identically osm names
    if (!OptionsCont::getOptions().isDefault("output.street-names") && myStreetName != possContinuation->getStreetName()
            && ((myStreetName != "" && possContinuation->getStreetName() != "")
                // only permit merging a short unnamed road with a longer named road
                || (myStreetName != "" && myLength <= possContinuation->getLength())
                || (myStreetName == "" && myLength >= possContinuation->getLength()))) {
        return false;
    }
 
    return true;
}
 
 
void
NBEdge::append(NBEdge* e) {
    // append geometry
    myGeom.append(e->myGeom);
    for (int i = 0; i < (int)myLanes.size(); i++) {
        myLanes[i].customShape.append(e->myLanes[i].customShape);
        if (myLanes[i].hasParameter(SUMO_PARAM_ORIGID) || e->myLanes[i].hasParameter(SUMO_PARAM_ORIGID)
                || OptionsCont::getOptions().getBool("output.original-names")) {
            const std::string origID = myLanes[i].getParameter(SUMO_PARAM_ORIGID, getID());
            const std::string origID2 = e->myLanes[i].getParameter(SUMO_PARAM_ORIGID, e->getID());
            if (origID != origID2) {
                myLanes[i].setParameter(SUMO_PARAM_ORIGID, origID + " " + origID2);
            }
        }
        myLanes[i].connectionsDone = e->myLanes[i].connectionsDone;
        myLanes[i].turnSigns = e->myLanes[i].turnSigns;
    }
    if (e->getLength() > myLength) {
        // possibly some lane attributes differ (when using option geometry.remove.min-length)
        // make sure to use the attributes from the longer edge
        for (int i = 0; i < (int)myLanes.size(); i++) {
            myLanes[i].width = e->myLanes[i].width;
        }
        // defined name prevails over undefined name of shorter road
        if (myStreetName == "") {
            myStreetName = e->myStreetName;
        }
    }
    // recompute length
    myLength += e->myLength;
    if (myLoadedLength > 0 || e->myLoadedLength > 0) {
        myLoadedLength = getFinalLength() + e->getFinalLength();
    }
    // copy the connections and the building step if given
    myStep = e->myStep;
    myConnections = e->myConnections;
    myTurnDestination = e->myTurnDestination;
    myPossibleTurnDestination = e->myPossibleTurnDestination;
    myConnectionsToDelete = e->myConnectionsToDelete;
    // set the node
    myTo = e->myTo;
    myTurnSignTarget = e->myTurnSignTarget;
    myToBorder = e->myToBorder;
    mergeParameters(e->getParametersMap());
    if (e->mySignalPosition != Position::INVALID) {
        mySignalPosition = e->mySignalPosition;
    }
    computeAngle(); // myEndAngle may be different now
}
 
 
bool
NBEdge::hasSignalisedConnectionTo(const NBEdge* const e) const {
    for (std::vector<Connection>::const_iterator i = myConnections.begin(); i != myConnections.end(); ++i) {
        if ((*i).toEdge == e && (*i).tlID != "") {
            return true;
        }
    }
    return false;
}
 
 
NBEdge*
NBEdge::getTurnDestination(bool possibleDestination) const {
    if (myTurnDestination == nullptr && possibleDestination) {
        return myPossibleTurnDestination;
    }
    return myTurnDestination;
}
 
 
std::string
NBEdge::getLaneID(int lane) const {
    return myID + "_" + toString(lane);
}
 
 
bool
NBEdge::isNearEnough2BeJoined2(NBEdge* e, double threshold) const {
    std::vector<double> distances = myGeom.distances(e->getGeometry());
    assert(distances.size() > 0);
    return VectorHelper<double>::maxValue(distances) < threshold;
}
 
 
void
NBEdge::addLane(int index, bool recomputeShape, bool recomputeConnections, bool shiftIndices) {
    assert(index <= (int)myLanes.size());
    myLanes.insert(myLanes.begin() + index, Lane(this, ""));
    // copy attributes
    if (myLanes.size() > 1) {
        int templateIndex = index > 0 ? index - 1 : index + 1;
        myLanes[index].speed = myLanes[templateIndex].speed;
        myLanes[index].friction = myLanes[templateIndex].friction;
        myLanes[index].permissions = myLanes[templateIndex].permissions;
        myLanes[index].preferred = myLanes[templateIndex].preferred;
        myLanes[index].endOffset = myLanes[templateIndex].endOffset;
        myLanes[index].width = myLanes[templateIndex].width;
        myLanes[index].updateParameters(myLanes[templateIndex].getParametersMap());
    }
    const EdgeVector& incs = myFrom->getIncomingEdges();
    if (recomputeShape) {
        computeLaneShapes();
    }
    if (recomputeConnections) {
        for (EdgeVector::const_iterator i = incs.begin(); i != incs.end(); ++i) {
            (*i)->invalidateConnections(true);
        }
        invalidateConnections(true);
    } else if (shiftIndices) {
        // shift outgoing connections above the added lane to the left
        for (Connection& c : myConnections) {
            if (c.fromLane >= index) {
                c.fromLane += 1;
            }
        }
        // shift incoming connections above the added lane to the left
        for (NBEdge* inc : myFrom->getIncomingEdges()) {
            for (Connection& c : inc->myConnections) {
                if (c.toEdge == this && c.toLane >= index) {
                    c.toLane += 1;
                }
            }
        }
        myFrom->shiftTLConnectionLaneIndex(this, +1, index - 1);
        myTo->shiftTLConnectionLaneIndex(this, +1, index - 1);
    }
}
 
void
NBEdge::incLaneNo(int by) {
    int newLaneNo = (int)myLanes.size() + by;
    while ((int)myLanes.size() < newLaneNo) {
        // recompute shapes on last addition
        const bool recompute = ((int)myLanes.size() == newLaneNo - 1) && myStep < EdgeBuildingStep::LANES2LANES_USER;
        addLane((int)myLanes.size(), recompute, recompute, false);
    }
}
 
 
void
NBEdge::deleteLane(int index, bool recompute, bool shiftIndices) {
    assert(index < (int)myLanes.size());
    myLanes.erase(myLanes.begin() + index);
    if (recompute) {
        computeLaneShapes();
        const EdgeVector& incs = myFrom->getIncomingEdges();
        for (EdgeVector::const_iterator i = incs.begin(); i != incs.end(); ++i) {
            (*i)->invalidateConnections(true);
        }
        invalidateConnections(true);
    } else if (shiftIndices) {
        removeFromConnections(nullptr, index, -1, false, true);
        for (NBEdge* inc : myFrom->getIncomingEdges()) {
            inc->removeFromConnections(this, -1, index, false, true);
        }
    }
}
 
 
void
NBEdge::decLaneNo(int by) {
    int newLaneNo = (int) myLanes.size() - by;
    assert(newLaneNo > 0);
    while ((int)myLanes.size() > newLaneNo) {
        // recompute shapes on last removal
        const bool recompute = (int)myLanes.size() == newLaneNo + 1 && myStep < EdgeBuildingStep::LANES2LANES_USER;
        deleteLane((int)myLanes.size() - 1, recompute, false);
    }
}
 
 
void
NBEdge::markAsInLane2LaneState() {
    assert(myTo->getOutgoingEdges().size() == 0);
    myStep = EdgeBuildingStep::LANES2LANES_DONE;
}
 
 
void
NBEdge::allowVehicleClass(int lane, SUMOVehicleClass vclass) {
    if (lane < 0) { // all lanes are meant...
        for (int i = 0; i < (int)myLanes.size(); i++) {
            allowVehicleClass(i, vclass);
        }
    } else {
        assert(lane < (int)myLanes.size());
        myLanes[lane].permissions |= vclass;
    }
}
 
 
void
NBEdge::disallowVehicleClass(int lane, SUMOVehicleClass vclass) {
    if (lane < 0) { // all lanes are meant...
        for (int i = 0; i < (int)myLanes.size(); i++) {
            disallowVehicleClass((int) i, vclass);
        }
    } else {
        assert(lane < (int)myLanes.size());
        myLanes[lane].permissions &= ~vclass;
    }
}
 
 
void
NBEdge::preferVehicleClass(int lane, SVCPermissions vclasses) {
    if (lane < 0) { // all lanes are meant...
        for (int i = 0; i < (int)myLanes.size(); i++) {
            preferVehicleClass(i, vclasses);
        }
    } else {
        assert(lane < (int)myLanes.size());
        myLanes[lane].permissions |= vclasses;
        myLanes[lane].preferred |= vclasses;
    }
}
 
 
void
NBEdge::setLaneWidth(int lane, double width) {
    if (lane < 0) {
        // all lanes are meant...
        myLaneWidth = width;
        for (int i = 0; i < (int)myLanes.size(); i++) {
            // ... do it for each lane
            setLaneWidth(i, width);
        }
        return;
    }
    assert(lane < (int)myLanes.size());
    myLanes[lane].width = width;
}
 
void
NBEdge::setLaneType(int lane, const std::string& type) {
    if (lane < 0) {
        for (int i = 0; i < (int)myLanes.size(); i++) {
            // ... do it for each lane
            setLaneType(i, type);
        }
        return;
    }
    assert(lane < (int)myLanes.size());
    myLanes[lane].type = type;
}
 
 
double
NBEdge::getLaneWidth(int lane) const {
    return myLanes[lane].width != UNSPECIFIED_WIDTH
           ? myLanes[lane].width
           : getLaneWidth() != UNSPECIFIED_WIDTH ? getLaneWidth() : SUMO_const_laneWidth;
}
 
double
NBEdge::getInternalLaneWidth(
    const NBNode& node,
    const NBEdge::Connection& connection,
    const NBEdge::Lane& successor,
    bool isVia) const {
 
    if (!isVia && node.isConstantWidthTransition() && getNumLanes() > connection.toEdge->getNumLanes()) {
        return getLaneWidth(connection.fromLane);
    }
 
    return (isBikepath(getPermissions(connection.fromLane)) && (
                getLaneWidth(connection.fromLane) < successor.width || successor.width == UNSPECIFIED_WIDTH)) ?
           myLanes[connection.fromLane].width : successor.width; // getLaneWidth(connection.fromLane) never returns -1 (UNSPECIFIED_WIDTH)
}
 
double
NBEdge::getTotalWidth() const {
    double result = 0;
    for (int i = 0; i < (int)myLanes.size(); i++) {
        result += getLaneWidth(i);
    }
    return result;
}
 
double
NBEdge::getEndOffset(int lane) const {
    return myLanes[lane].endOffset != UNSPECIFIED_OFFSET ? myLanes[lane].endOffset : getEndOffset();
}
 
 
const StopOffset&
NBEdge::getEdgeStopOffset() const {
    return myEdgeStopOffset;
}
 
 
const StopOffset&
NBEdge::getLaneStopOffset(int lane) const {
    if (lane == -1) {
        return myEdgeStopOffset;
    } else {
        return myLanes[lane].laneStopOffset;
    }
}
 
 
void
NBEdge::setEndOffset(int lane, double offset) {
    if (lane < 0) {
        // all lanes are meant...
        myEndOffset = offset;
        for (int i = 0; i < (int)myLanes.size(); i++) {
            // ... do it for each lane
            setEndOffset(i, offset);
        }
        return;
    }
    assert(lane < (int)myLanes.size());
    myLanes[lane].endOffset = offset;
}
 
 
bool
NBEdge::setEdgeStopOffset(int lane, const StopOffset& offset, bool overwrite) {
    if (lane < 0) {
        if (!overwrite && myEdgeStopOffset.isDefined()) {
            return false;
        }
        // all lanes are meant...
        if (offset.getOffset() < 0) {
            // Edge length unknown at parsing time, thus check here.
            WRITE_WARNINGF(TL("Ignoring invalid stopOffset for edge '%' (negative offset)."), getID());
            return false;
        } else {
            myEdgeStopOffset = offset;
        }
    } else if (lane < (int)myLanes.size()) {
        if (!myLanes[lane].laneStopOffset.isDefined() || overwrite) {
            if (offset.getOffset() < 0) {
                // Edge length unknown at parsing time, thus check here.
                WRITE_WARNINGF(TL("Ignoring invalid stopOffset for lane '%' (negative offset)."), getLaneID(lane));
            } else {
                myLanes[lane].laneStopOffset = offset;
            }
        }
    } else {
        WRITE_WARNINGF(TL("Ignoring invalid stopOffset for lane '%' (invalid lane index)."), toString(lane));
    }
    return true;
}
 
 
void
NBEdge::setSpeed(int lane, double speed) {
    if (lane < 0) {
        // all lanes are meant...
        mySpeed = speed;
        for (int i = 0; i < (int)myLanes.size(); i++) {
            // ... do it for each lane
            setSpeed(i, speed);
        }
        return;
    }
    assert(lane < (int)myLanes.size());
    myLanes[lane].speed = speed;
}
 
 
void
NBEdge::setFriction(int lane, double friction) {
    if (lane < 0) {
        // all lanes are meant...
        myFriction = friction;
        for (int i = 0; i < (int)myLanes.size(); i++) {
            // ... do it for each lane
            setFriction(i, friction);
        }
        return;
    }
    assert(lane < (int)myLanes.size());
    myLanes[lane].friction = friction;
}
 
 
void
NBEdge::setAcceleration(int lane, bool accelRamp) {
    assert(lane >= 0);
    assert(lane < (int)myLanes.size());
    myLanes[lane].accelRamp = accelRamp;
}
 
 
void
NBEdge::setLaneShape(int lane, const PositionVector& shape) {
    assert(lane >= 0);
    assert(lane < (int)myLanes.size());
    myLanes[lane].customShape = shape;
}
 
 
void
NBEdge::setPermissions(SVCPermissions permissions, int lane) {
    if (lane < 0) {
        for (int i = 0; i < (int)myLanes.size(); i++) {
            // ... do it for each lane
            setPermissions(permissions, i);
        }
    } else {
        assert(lane < (int)myLanes.size());
        myLanes[lane].permissions = permissions;
    }
}
 
 
void
NBEdge::setPreferredVehicleClass(SVCPermissions permissions, int lane) {
    if (lane < 0) {
        for (int i = 0; i < (int)myLanes.size(); i++) {
            // ... do it for each lane
            setPreferredVehicleClass(permissions, i);
        }
    } else {
        assert(lane < (int)myLanes.size());
        myLanes[lane].preferred = permissions;
    }
}
 
 
void
NBEdge::setPermittedChanging(int lane, SVCPermissions changeLeft, SVCPermissions changeRight) {
    assert(lane >= 0);
    assert(lane < (int)myLanes.size());
    myLanes[lane].changeLeft = changeLeft;
    myLanes[lane].changeRight = changeRight;
}
 
 
SVCPermissions
NBEdge::getPermissions(int lane) const {
    if (lane < 0) {
        SVCPermissions result = 0;
        for (int i = 0; i < (int)myLanes.size(); i++) {
            result |= getPermissions(i);
        }
        return result;
    } else {
        assert(lane < (int)myLanes.size());
        return myLanes[lane].permissions;
    }
}
 
 
void
NBEdge::setLoadedLength(double val) {
    myLoadedLength = val;
}
 
void
NBEdge::setAverageLengthWithOpposite(double val) {
    myLength = val;
}
 
 
void
NBEdge::dismissVehicleClassInformation() {
    for (std::vector<Lane>::iterator i = myLanes.begin(); i != myLanes.end(); ++i) {
        (*i).permissions = SVCAll;
        (*i).preferred = 0;
    }
}
 
 
bool
NBEdge::connections_sorter(const Connection& c1, const Connection& c2) {
    if (c1.fromLane != c2.fromLane) {
        return c1.fromLane < c2.fromLane;
    }
    if (c1.toEdge != c2.toEdge) {
        return false; // do not change ordering among toEdges as this is determined by angle in an earlier step
    }
    return c1.toLane < c2.toLane;
}
 
 
double
NBEdge::getSignalOffset() const {
    if (mySignalPosition == Position::INVALID) {
        return UNSPECIFIED_SIGNAL_OFFSET;
    } else {
        Position laneEnd = myLaneSpreadFunction == LaneSpreadFunction::RIGHT ?
                           myLanes.back().shape.back() : myLanes[getNumLanes() / 2].shape.back();
        //std::cout << getID() << " signalPos=" << mySignalPosition << " laneEnd=" << laneEnd << " toShape=" << myTo->getShape() << " toBorder=" << myToBorder << "\n";
        return mySignalPosition.distanceTo2D(laneEnd);
    }
}
 
 
int
NBEdge::getFirstNonPedestrianLaneIndex(int direction, bool exclusive) const {
    assert(direction == NBNode::FORWARD || direction == NBNode::BACKWARD);
    const int start = (direction == NBNode::FORWARD ? 0 : (int)myLanes.size() - 1);
    const int end = (direction == NBNode::FORWARD ? (int)myLanes.size() : - 1);
    for (int i = start; i != end; i += direction) {
        // SVCAll, does not count as a sidewalk, green verges (permissions = 0) do not count as road
        // in the exclusive case, lanes that allow pedestrians along with any other class also count as road
        if ((exclusive && myLanes[i].permissions != SVC_PEDESTRIAN && myLanes[i].permissions != 0)
                || ((myLanes[i].permissions & SVC_PEDESTRIAN) == 0 && myLanes[i].permissions != 0)) {
            return i;
        }
    }
    return -1;
}
 
int
NBEdge::getFirstNonPedestrianNonBicycleLaneIndex(int direction, bool exclusive) const {
    assert(direction == NBNode::FORWARD || direction == NBNode::BACKWARD);
    const int start = (direction == NBNode::FORWARD ? 0 : (int)myLanes.size() - 1);
    const int end = (direction == NBNode::FORWARD ? (int)myLanes.size() : - 1);
    for (int i = start; i != end; i += direction) {
        // SVCAll, does not count as a sidewalk, green verges (permissions = 0) do not count as road
        // in the exclusive case, lanes that allow pedestrians along with any other class also count as road
        SVCPermissions p = myLanes[i].permissions;
        if ((exclusive && p != SVC_PEDESTRIAN && p != SVC_BICYCLE && p != (SVC_PEDESTRIAN | SVC_BICYCLE) && p != 0)
                || (p == SVCAll || ((p & (SVC_PEDESTRIAN | SVC_BICYCLE)) == 0 && p != 0))) {
            return i;
        }
    }
    return -1;
}
 
int
NBEdge::getSpecialLane(SVCPermissions permissions) const {
    for (int i = 0; i < (int)myLanes.size(); i++) {
        if (myLanes[i].permissions == permissions) {
            return i;
        }
    }
    return -1;
}
 
int
NBEdge::getFirstAllowedLaneIndex(int direction) const {
    assert(direction == NBNode::FORWARD || direction == NBNode::BACKWARD);
    const int start = (direction == NBNode::FORWARD ? 0 : (int)myLanes.size() - 1);
    const int end = (direction == NBNode::FORWARD ? (int)myLanes.size() : - 1);
    for (int i = start; i != end; i += direction) {
        if (myLanes[i].permissions != 0) {
            return i;
        }
    }
    return end - direction;
}
 
 
std::set<SVCPermissions>
NBEdge::getPermissionVariants(int iStart, int iEnd) const {
    std::set<SVCPermissions> result;
    if (iStart < 0 || iStart >= getNumLanes() || iEnd > getNumLanes()) {
        throw ProcessError("invalid indices iStart " + toString(iStart) + " iEnd " + toString(iEnd) + " for edge with " + toString(getNumLanes()) + " lanes.");
    }
    for (int i = iStart; i < iEnd; ++i) {
        result.insert(getPermissions(i));
    }
    return result;
}
 
int
NBEdge::getNumLanesThatAllow(SVCPermissions permissions, bool allPermissions) const {
    int result = 0;
    for (const Lane& lane : myLanes) {
        if ((allPermissions && (lane.permissions & permissions) == permissions)
                || (!allPermissions && (lane.permissions & permissions) != 0)) {
            result++;
        }
    }
    return result;
}
 
bool
NBEdge::allowsChangingLeft(int lane, SUMOVehicleClass vclass) const {
    assert(lane >= 0 && lane < getNumLanes());
    return myLanes[lane].changeLeft == SVC_UNSPECIFIED ? true : (myLanes[lane].changeLeft & vclass) == vclass;
}
 
bool
NBEdge::allowsChangingRight(int lane, SUMOVehicleClass vclass) const {
    assert(lane >= 0 && lane < getNumLanes());
    return myLanes[lane].changeRight == SVC_UNSPECIFIED ? true : (myLanes[lane].changeRight & vclass) == vclass;
}
 
double
NBEdge::getCrossingAngle(NBNode* node) {
    double angle = getAngleAtNode(node) + (getFromNode() == node ? 180.0 : 0.0);
    if (angle < 0) {
        angle += 360.0;
    }
    if (angle >= 360) {
        angle -= 360.0;
    }
    if (gDebugFlag1) {
        std::cout << getID() << " angle=" << getAngleAtNode(node) << " convAngle=" << angle << "\n";
    }
    return angle;
}
 
 
NBEdge::Lane
NBEdge::getFirstNonPedestrianLane(int direction) const {
    int index = getFirstNonPedestrianLaneIndex(direction);
    if (index < 0) {
        throw ProcessError(TLF("Edge % allows pedestrians on all lanes", getID()));
    }
    return myLanes[index];
}
 
std::string
NBEdge::getSidewalkID() {
    // see IntermodalEdge::getSidewalk()
    for (int i = 0; i < (int)myLanes.size(); i++) {
        if (myLanes[i].permissions == SVC_PEDESTRIAN) {
            return getLaneID(i);
        }
    }
    for (int i = 0; i < (int)myLanes.size(); i++) {
        if ((myLanes[i].permissions & SVC_PEDESTRIAN) != 0) {
            return getLaneID(i);
        }
    }
    return getLaneID(0);
}
 
void
NBEdge::addSidewalk(double width) {
    addRestrictedLane(width, SVC_PEDESTRIAN);
}
 
 
void
NBEdge::restoreSidewalk(std::vector<NBEdge::Lane> oldLanes, PositionVector oldGeometry, std::vector<NBEdge::Connection> oldConnections) {
    restoreRestrictedLane(SVC_PEDESTRIAN, oldLanes, oldGeometry, oldConnections);
}
 
 
void
NBEdge::addBikeLane(double width) {
    addRestrictedLane(width, SVC_BICYCLE);
}
 
 
void
NBEdge::restoreBikelane(std::vector<NBEdge::Lane> oldLanes, PositionVector oldGeometry, std::vector<NBEdge::Connection> oldConnections) {
    restoreRestrictedLane(SVC_BICYCLE, oldLanes, oldGeometry, oldConnections);
}
 
bool
NBEdge::hasRestrictedLane(SUMOVehicleClass vclass) const {
    for (const Lane& lane : myLanes) {
        if (lane.permissions == vclass) {
            return true;
        }
    }
    return false;
}
 
 
void
NBEdge::addRestrictedLane(double width, SUMOVehicleClass vclass) {
    if (hasRestrictedLane(vclass)) {
        WRITE_WARNINGF(TL("Edge '%' already has a dedicated lane for %s. Not adding another one."), getID(), toString(vclass));
        return;
    }
    if (myLaneSpreadFunction == LaneSpreadFunction::CENTER) {
        myGeom.move2side(width / 2);
    }
    // disallow the designated vclass on all "old" lanes
    disallowVehicleClass(-1, vclass);
    // don't create a restricted vehicle lane to the right of a sidewalk
    const int newIndex = (vclass != SVC_PEDESTRIAN && myLanes[0].permissions == SVC_PEDESTRIAN) ? 1 : 0;
    if (newIndex == 0) {
        // disallow pedestrians on all "higher" lanes to ensure that sidewalk remains the rightmost lane
        disallowVehicleClass(-1, SVC_PEDESTRIAN);
    }
    // add new lane
    myLanes.insert(myLanes.begin() + newIndex, Lane(this, myLanes[0].getParameter(SUMO_PARAM_ORIGID)));
    myLanes[newIndex].permissions = vclass;
    myLanes[newIndex].width = fabs(width);
    // shift outgoing connections to the left
    for (std::vector<Connection>::iterator it = myConnections.begin(); it != myConnections.end(); ++it) {
        Connection& c = *it;
        if (c.fromLane >= newIndex) {
            c.fromLane += 1;
        }
    }
    // shift incoming connections to the left
    const EdgeVector& incoming = myFrom->getIncomingEdges();
    for (EdgeVector::const_iterator it = incoming.begin(); it != incoming.end(); ++it) {
        (*it)->shiftToLanesToEdge(this, 1);
    }
    myFrom->shiftTLConnectionLaneIndex(this, 1);
    myTo->shiftTLConnectionLaneIndex(this, 1);
    computeLaneShapes();
}
 
 
void
NBEdge::restoreRestrictedLane(SUMOVehicleClass vclass, std::vector<NBEdge::Lane> oldLanes, PositionVector oldGeometry, std::vector<NBEdge::Connection> oldConnections) {
    // check that previously lane was transformed
    if (myLanes[0].permissions != vclass) {
        WRITE_WARNINGF(TL("Edge '%' doesn't have a dedicated lane for %s. Cannot be restored."), getID(), toString(vclass));
        return;
    }
    // restore old values
    myGeom = oldGeometry;
    myLanes = oldLanes;
    myConnections = oldConnections;
    // shift incoming connections to the right
    const EdgeVector& incoming = myFrom->getIncomingEdges();
    for (EdgeVector::const_iterator it = incoming.begin(); it != incoming.end(); ++it) {
        (*it)->shiftToLanesToEdge(this, 0);
    }
    // Shift TL conections
    myFrom->shiftTLConnectionLaneIndex(this, 0);
    myTo->shiftTLConnectionLaneIndex(this, 0);
    computeLaneShapes();
}
 
 
void
NBEdge::shiftToLanesToEdge(NBEdge* to, int laneOff) {
    for (std::vector<Connection>::iterator it = myConnections.begin(); it != myConnections.end(); ++it) {
        if ((*it).toEdge == to && (*it).toLane >= 0) {
            (*it).toLane += laneOff;
        }
    }
}
 
 
void
NBEdge::shiftPositionAtNode(NBNode* node, NBEdge* other) {
    if (myLaneSpreadFunction == LaneSpreadFunction::CENTER && !isRailway(getPermissions()) && getBidiEdge() == nullptr) {
        const int i = (node == myTo ? -1 : 0);
        const int i2 = (node == myTo ? 0 : -1);
        const double dist = myGeom[i].distanceTo2D(node->getPosition());
        const double neededOffset = getTotalWidth() / 2;
        const double dist2 = MIN2(myGeom.distance2D(other->getGeometry()[i2]),
                                  other->getGeometry().distance2D(myGeom[i]));
        const double neededOffset2 = neededOffset + (other->getTotalWidth()) / 2;
        if (dist < neededOffset && dist2 < neededOffset2) {
            PositionVector tmp = myGeom;
            // @note this doesn't work well for vissim networks
            //tmp.move2side(MIN2(neededOffset - dist, neededOffset2 - dist2));
            try {
                tmp.move2side(neededOffset - dist);
                myGeom[i] = tmp[i];
            } catch (InvalidArgument&) {
                WRITE_WARNINGF(TL("Could not avoid overlapping shape at node '%' for edge '%'."), node->getID(), getID());
            }
        }
    }
}
 
 
Position
NBEdge::geometryPositionAtOffset(double offset) const {
    if (myLoadedLength > 0) {
        return myGeom.positionAtOffset(offset * myLength / myLoadedLength);
    } else {
        return myGeom.positionAtOffset(offset);
    }
}
 
 
double
NBEdge::getFinalLength() const {
    double result = getLoadedLength();
    if (OptionsCont::getOptions().getBool("no-internal-links") && !hasLoadedLength()) {
        // use length to junction center even if a modified geometry was given
        PositionVector geom = cutAtIntersection(myGeom);
        geom.push_back_noDoublePos(getToNode()->getCenter());
        geom.push_front_noDoublePos(getFromNode()->getCenter());
        result = geom.length();
    }
    double avgEndOffset = 0;
    for (const Lane& lane : myLanes) {
        avgEndOffset += lane.endOffset;
    }
    if (isBidiRail()) {
        avgEndOffset += myPossibleTurnDestination->getEndOffset();
    }
    avgEndOffset /= (double)myLanes.size();
    return MAX2(result - avgEndOffset, POSITION_EPS);
}
 
 
void
NBEdge::setOrigID(const std::string origID, const bool append, const int laneIdx) {
    if (laneIdx == -1) {
        for (int i = 0; i < (int)myLanes.size(); i++) {
            setOrigID(origID, append, i);
        }
    } else {
        if (origID != "") {
            if (append) {
                std::vector<std::string> oldIDs = StringTokenizer(myLanes[laneIdx].getParameter(SUMO_PARAM_ORIGID)).getVector();
                if (std::find(oldIDs.begin(), oldIDs.end(), origID) == oldIDs.end()) {
                    oldIDs.push_back(origID);
                }
                myLanes[laneIdx].setParameter(SUMO_PARAM_ORIGID, toString(oldIDs));
            } else {
                myLanes[laneIdx].setParameter(SUMO_PARAM_ORIGID, origID);
            }
        } else {
            // do not record empty origID parameter
            myLanes[laneIdx].unsetParameter(SUMO_PARAM_ORIGID);
        }
    }
}
 
 
const EdgeVector&
NBEdge::getSuccessors(SUMOVehicleClass vClass) const {
    // @todo cache successors instead of recomputing them every time
    mySuccessors.clear();
    //std::cout << "getSuccessors edge=" << getID() << " svc=" << toString(vClass) << " cons=" << myConnections.size() << "\n";
    for (const Connection& con : myConnections) {
        if (con.fromLane >= 0 && con.toLane >= 0 && con.toEdge != nullptr &&
                (vClass == SVC_IGNORING || (getPermissions(con.fromLane)
                                            & con.toEdge->getPermissions(con.toLane) & vClass) != 0)
                && std::find(mySuccessors.begin(), mySuccessors.end(), con.toEdge) == mySuccessors.end()) {
            mySuccessors.push_back(con.toEdge);
            //std::cout << "   succ=" << con.toEdge->getID() << "\n";
        }
    }
    return mySuccessors;
}
 
 
const ConstRouterEdgePairVector&
NBEdge::getViaSuccessors(SUMOVehicleClass vClass, bool /*ignoreTransientPermissions*/) const {
    // @todo cache successors instead of recomputing them every time
    myViaSuccessors.clear();
    for (const Connection& con : myConnections) {
        std::pair<const NBEdge*, const Connection*> pair(con.toEdge, nullptr);
        // special case for Persons in Netedit
        if (vClass == SVC_PEDESTRIAN) {
            myViaSuccessors.push_back(pair);    // Pedestrians have complete freedom of movement in all sucessors
        } else if ((con.fromLane >= 0) && (con.toLane >= 0) &&
                   (con.toEdge != nullptr) &&
                   ((getPermissions(con.fromLane) & con.toEdge->getPermissions(con.toLane) & vClass) == vClass)) {
            // ignore duplicates
            if (con.getLength() > 0) {
                pair.second = &con;
            }
            myViaSuccessors.push_back(pair);
        }
    }
    return myViaSuccessors;
}
 
 
void
NBEdge::debugPrintConnections(bool outgoing, bool incoming) const {
    if (outgoing) {
        for (const Connection& c : myConnections) {
            std::cout << " " << getID() << "_" << c.fromLane << "->" << c.toEdge->getID() << "_" << c.toLane << "\n";
        }
    }
    if (incoming) {
        for (NBEdge* inc : myFrom->getIncomingEdges()) {
            for (Connection& c : inc->myConnections) {
                if (c.toEdge == this) {
                    std::cout << " " << inc->getID() << "_" << c.fromLane << "->" << c.toEdge->getID() << "_" << c.toLane << "\n";
                }
            }
        }
    }
}
 
 
int
NBEdge::getLaneIndexFromLaneID(const std::string laneID) {
    return StringUtils::toInt(laneID.substr(laneID.rfind("_") + 1));
}
 
bool
NBEdge::joinLanes(SVCPermissions perms) {
    bool haveJoined = false;
    int i = 0;
    while (i < getNumLanes() - 1) {
        if ((getPermissions(i) == perms) && (getPermissions(i + 1) == perms)) {
            const double newWidth = getLaneWidth(i) + getLaneWidth(i + 1);
            const std::string newType = myLanes[i].type + "|" + myLanes[i + 1].type;
            deleteLane(i, false, true);
            setLaneWidth(i, newWidth);
            setLaneType(i, newType);
            haveJoined = true;
        } else {
            i++;
        }
    }
    return haveJoined;
}
 
 
EdgeVector
NBEdge::filterByPermissions(const EdgeVector& edges, SVCPermissions permissions) {
    EdgeVector result;
    for (NBEdge* edge : edges) {
        if ((edge->getPermissions() & permissions) != 0) {
            result.push_back(edge);
        }
    }
    return result;
}
 
NBEdge*
NBEdge::getStraightContinuation(SVCPermissions permissions) const {
    EdgeVector cands = filterByPermissions(myTo->getOutgoingEdges(), permissions);
    if (cands.size() == 0) {
        return nullptr;
    }
    sort(cands.begin(), cands.end(), NBContHelper::edge_similar_direction_sorter(this));
    NBEdge* best = cands.front();
    if (isTurningDirectionAt(best)) {
        return nullptr;
    } else {
        return best;
    }
}
 
NBEdge*
NBEdge::getStraightPredecessor(SVCPermissions permissions) const {
    EdgeVector cands = filterByPermissions(myFrom->getIncomingEdges(), permissions);
    if (cands.size() == 0) {
        return nullptr;
    }
    sort(cands.begin(), cands.end(), NBContHelper::edge_similar_direction_sorter(this, false));
    NBEdge* best = cands.front();
    if (best->isTurningDirectionAt(this)) {
        return nullptr;
    } else {
        return best;
    }
}
 
 
NBEdge*
NBEdge::guessOpposite(bool reguess) {
    NBEdge* opposite = nullptr;
    if (getNumLanes() > 0) {
        NBEdge::Lane& lastLane = myLanes.back();
        const double lastWidth = getLaneWidth(getNumLanes() - 1);
        if (lastLane.oppositeID == "" || reguess) {
            for (NBEdge* cand : getToNode()->getOutgoingEdges()) {
                if (cand->getToNode() == getFromNode() && !cand->getLanes().empty()) {
                    const double lastWidthCand = cand->getLaneWidth(cand->getNumLanes() - 1);
                    // in sharp corners, the difference may be higher
                    // factor (sqrt(2) for 90 degree corners
                    const double threshold = 1.42 * 0.5 * (lastWidth + lastWidthCand) + 0.5;
                    const double distance = VectorHelper<double>::maxValue(lastLane.shape.distances(cand->getLanes().back().shape));
                    //std::cout << " distance=" << distance << " threshold=" << threshold << " distances=" << toString(lastLane.shape.distances(cand->getLanes().back().shape)) << "\n";
                    if (distance < threshold) {
                        opposite = cand;
                    }
                }
            }
            if (opposite != nullptr) {
                lastLane.oppositeID = opposite->getLaneID(opposite->getNumLanes() - 1);
            }
        }
    }
    return opposite;
}
 
double
NBEdge::getDistancAt(double pos) const {
    // negative values of myDistances indicate descending kilometrage
    return fabs(myDistance + pos);
}
 
/****************************************************************************/