MSMeanData_Net.cpp

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/****************************************************************************/
// Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
// Copyright (C) 2004-2025 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
/****************************************************************************/
// Network state mean data collector for edges/lanes
/****************************************************************************/
#include <config.h>
 
#ifdef HAVE_FOX
#include <utils/common/ScopedLocker.h>
#endif
#include <utils/common/SUMOTime.h>
#include <utils/common/ToString.h>
#include <utils/iodevices/OutputDevice.h>
#include <microsim/MSEdgeControl.h>
#include <microsim/MSEdge.h>
#include <microsim/MSLane.h>
#include <microsim/MSVehicle.h>
#include <microsim/MSGlobals.h>
#include <mesosim/MELoop.h>
#include <mesosim/MESegment.h>
#include "MSMeanData_Net.h"
 
 
// ===========================================================================
// debug constants
// ===========================================================================
//#define DEBUG_OCCUPANCY
//#define DEBUG_OCCUPANCY2
//#define DEBUG_NOTIFY_ENTER
//#define DEBUG_COND (veh.getLane()->getID() == "")
//#define DEBUG_COND (false)
//#define DEBUG_COND2 (veh.getEdge()->getID() == "")
 
 
// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// MSMeanData_Net::MSLaneMeanDataValues - methods
// ---------------------------------------------------------------------------
MSMeanData_Net::MSLaneMeanDataValues::MSLaneMeanDataValues(MSLane* const lane,
        const double length,
        const bool doAdd,
        const MSMeanData_Net* parent)
    : MSMeanData::MeanDataValues(lane, length, doAdd, parent),
      nVehDeparted(0), nVehArrived(0), nVehEntered(0), nVehLeft(0),
      nVehVaporized(0), nVehTeleported(0), waitSeconds(0), timeLoss(0),
      nVehLaneChangeFrom(0), nVehLaneChangeTo(0),
      frontSampleSeconds(0), frontTravelledDistance(0),
      vehLengthSum(0), occupationSum(0),
      minimalVehicleLength(INVALID_DOUBLE),
      myParent(parent) {}
 
 
MSMeanData_Net::MSLaneMeanDataValues::~MSLaneMeanDataValues() {
}
 
 
void
MSMeanData_Net::MSLaneMeanDataValues::reset(bool) {
    nVehDeparted = 0;
    nVehArrived = 0;
    nVehEntered = 0;
    nVehLeft = 0;
    nVehVaporized = 0;
    nVehTeleported = 0;
    nVehLaneChangeFrom = 0;
    nVehLaneChangeTo = 0;
    sampleSeconds = 0.;
    travelledDistance = 0;
    waitSeconds = 0;
    timeLoss = 0;
    frontSampleSeconds = 0;
    frontTravelledDistance = 0;
    vehLengthSum = 0;
    occupationSum = 0;
    minimalVehicleLength = INVALID_DOUBLE;
    resetTime = SIMSTEP;
}
 
 
void
MSMeanData_Net::MSLaneMeanDataValues::addTo(MSMeanData::MeanDataValues& val) const {
    MSLaneMeanDataValues& v = (MSLaneMeanDataValues&) val;
    v.nVehDeparted += nVehDeparted;
    v.nVehArrived += nVehArrived;
    v.nVehEntered += nVehEntered;
    v.nVehLeft += nVehLeft;
    v.nVehVaporized += nVehVaporized;
    v.nVehTeleported += nVehTeleported;
    v.nVehLaneChangeFrom += nVehLaneChangeFrom;
    v.nVehLaneChangeTo += nVehLaneChangeTo;
    v.sampleSeconds += sampleSeconds;
    v.travelledDistance += travelledDistance;
    v.waitSeconds += waitSeconds;
    v.timeLoss += timeLoss;
    v.frontSampleSeconds += frontSampleSeconds;
    v.frontTravelledDistance += frontTravelledDistance;
    v.vehLengthSum += vehLengthSum;
    v.occupationSum += occupationSum;
    if (v.minimalVehicleLength == INVALID_DOUBLE) {
        v.minimalVehicleLength = minimalVehicleLength;
    } else {
        v.minimalVehicleLength = MIN2(minimalVehicleLength, v.minimalVehicleLength);
    }
}
 
 
void
MSMeanData_Net::MSLaneMeanDataValues::notifyMoveInternal(
    const SUMOTrafficObject& veh, const double frontOnLane,
    const double timeOnLane, const double /* meanSpeedFrontOnLane */,
    const double meanSpeedVehicleOnLane,
    const double travelledDistanceFrontOnLane,
    const double travelledDistanceVehicleOnLane,
    const double meanLengthOnLane) {
#ifdef DEBUG_OCCUPANCY
    if (DEBUG_COND2) {
        std::cout << SIMTIME << "\n  MSMeanData_Net::MSLaneMeanDataValues::notifyMoveInternal()\n"
                  << "  veh '" << veh.getID() << "' on edge '" << veh.getEdge()->getID() << "'"
                  << ", timeOnLane=" << timeOnLane
                  << ", meanSpeedVehicleOnLane=" << meanSpeedVehicleOnLane
                  << ",\ntravelledDistanceFrontOnLane=" << travelledDistanceFrontOnLane
                  << ", travelledDistanceVehicleOnLane=" << travelledDistanceVehicleOnLane
                  << ", meanLengthOnLane=" << meanLengthOnLane
                  << std::endl;
    }
#endif
    if (myParent != nullptr && !myParent->vehicleApplies(veh)) {
        return;
    }
    sampleSeconds += timeOnLane;
    travelledDistance += travelledDistanceVehicleOnLane;
    vehLengthSum += veh.getVehicleType().getLength() * timeOnLane;
    if (MSGlobals::gUseMesoSim) {
        // For the mesosim case no information on whether the vehicle was occupying
        // the lane with its whole length is available. We assume the whole length
        // Therefore this increment is taken out with more information on the vehicle movement.
        occupationSum += veh.getVehicleType().getLength() * timeOnLane;
    } else {
        // for the microsim case more elaborate calculation of the average length on the lane,
        // is taken out in notifyMove(), refs #153
        occupationSum += meanLengthOnLane * TS;
    }
    if (!veh.isStopped()) {
        if (myParent != nullptr && meanSpeedVehicleOnLane < myParent->myHaltSpeed) {
            waitSeconds += timeOnLane;
        } else if (MSGlobals::gUseMesoSim) {
            waitSeconds += STEPS2TIME(veh.getWaitingTime());
        }
        const double vmax = veh.getLane() == nullptr ? veh.getEdge()->getVehicleMaxSpeed(&veh) : veh.getLane()->getVehicleMaxSpeed(&veh);
        if (vmax > 0) {
            timeLoss += timeOnLane * MAX2(0.0, vmax - meanSpeedVehicleOnLane) / vmax;
        }
    }
    frontSampleSeconds += frontOnLane;
    frontTravelledDistance += travelledDistanceFrontOnLane;
    if (minimalVehicleLength == INVALID_DOUBLE) {
        minimalVehicleLength = veh.getVehicleType().getLengthWithGap();
    } else {
        minimalVehicleLength = MIN2(minimalVehicleLength, veh.getVehicleType().getLengthWithGap());
    }
#ifdef DEBUG_OCCUPANCY2
    // refs #3265
    std::cout << SIMTIME << "ID: " << getDescription() << " minVehicleLength=" << minimalVehicleLength << std::endl;
#endif
}
 
 
bool
MSMeanData_Net::MSLaneMeanDataValues::notifyLeave(SUMOTrafficObject& veh, double /*lastPos*/, MSMoveReminder::Notification reason, const MSLane* /* enteredLane */) {
    if ((myParent == nullptr || myParent->vehicleApplies(veh)) && (
                getLane() == nullptr || !veh.isVehicle() || getLane() == static_cast<MSVehicle&>(veh).getLane())) {
#ifdef HAVE_FOX
        ScopedLocker<> lock(myNotificationMutex, MSGlobals::gNumSimThreads > 1);
#endif
        if (MSGlobals::gUseMesoSim) {
            removeFromVehicleUpdateValues(veh);
        }
        if (reason == MSMoveReminder::NOTIFICATION_ARRIVED) {
            ++nVehArrived;
        } else if (reason == MSMoveReminder::NOTIFICATION_LANE_CHANGE) {
            ++nVehLaneChangeFrom;
        } else if (myParent == nullptr || reason != MSMoveReminder::NOTIFICATION_SEGMENT) {
            ++nVehLeft;
            if (reason == MSMoveReminder::NOTIFICATION_TELEPORT || reason == MSMoveReminder::NOTIFICATION_TELEPORT_ARRIVED) {
                ++nVehTeleported;
            } else if (reason >= MSMoveReminder::NOTIFICATION_VAPORIZED_CALIBRATOR) {
                ++nVehVaporized;
            }
        }
    }
    if (MSGlobals::gUseMesoSim) {
        return false;
    }
    return reason == MSMoveReminder::NOTIFICATION_JUNCTION;
}
 
 
bool
MSMeanData_Net::MSLaneMeanDataValues::notifyEnter(SUMOTrafficObject& veh, MSMoveReminder::Notification reason, const MSLane* enteredLane) {
#ifdef DEBUG_NOTIFY_ENTER
    std::cout << "\n" << SIMTIME << " MSMeanData_Net::MSLaneMeanDataValues: veh '" << veh.getID() << "' enters lane '" << enteredLane->getID() << "'" << std::endl;
#else
    UNUSED_PARAMETER(enteredLane);
#endif
    if (myParent == nullptr || myParent->vehicleApplies(veh)) {
        if (getLane() == nullptr || !veh.isVehicle() || getLane() == static_cast<MSVehicle&>(veh).getLane()) {
#ifdef HAVE_FOX
            ScopedLocker<> lock(myNotificationMutex, MSGlobals::gNumSimThreads > 1);
#endif
            if (reason == MSMoveReminder::NOTIFICATION_DEPARTED) {
                ++nVehDeparted;
            } else if (reason == MSMoveReminder::NOTIFICATION_LANE_CHANGE) {
                ++nVehLaneChangeTo;
            } else if (myParent == nullptr || reason != MSMoveReminder::NOTIFICATION_SEGMENT) {
                ++nVehEntered;
            }
        }
        return true;
    }
    return false;
}
 
 
bool
MSMeanData_Net::MSLaneMeanDataValues::isEmpty() const {
    return sampleSeconds == 0 && nVehDeparted == 0 && nVehArrived == 0 && nVehEntered == 0
           && nVehLeft == 0 && nVehVaporized == 0 && nVehTeleported == 0 && nVehLaneChangeFrom == 0 && nVehLaneChangeTo == 0;
}
 
double
MSMeanData_Net::MSLaneMeanDataValues::getOccupancy(SUMOTime period, int numLanes) const {
    return occupationSum / STEPS2TIME(period) / myLaneLength / (double)numLanes * 100.;
}
 
void
MSMeanData_Net::MSLaneMeanDataValues::write(OutputDevice& dev, const SumoXMLAttrMask& attributeMask, const SUMOTime period,
        const int numLanes, const double speedLimit, const double defaultTravelTime, const int numVehicles) const {
 
    double density = frontSampleSeconds / STEPS2TIME(period) * 1000. / myLaneLength;
    double overlapDensity = sampleSeconds / STEPS2TIME(period) * 1000. / myLaneLength;
    if (MSGlobals::gLateralResolution < 0) {
        // avoid exceeding upper bound
        density = MIN2(density, 1000 * (double)numLanes / MAX2(minimalVehicleLength, NUMERICAL_EPS));
        overlapDensity = MIN2(overlapDensity, 1000 * (double)numLanes / MAX2(minimalVehicleLength, NUMERICAL_EPS));
    }
    const double laneDensity = density / (double)numLanes;
    const double occupancy = getOccupancy(period, numLanes);
#ifdef DEBUG_OCCUPANCY2
    // tests #3264
    if (occupancy > 100) {
        std::cout << SIMTIME << " Encountered bad occupancy: " << occupancy
                  << ", myLaneLength=" << myLaneLength << ", period=" << STEPS2TIME(period) << ", occupationSum=" << occupationSum
                  << std::endl;
    }
    // refs #3265
    std::cout << SIMTIME << "ID: " << getDescription() << " minVehicleLength=" << minimalVehicleLength
              << "\ndensity=" << density << "\n";
#endif
 
    if (myParent == nullptr) {
        const double speed = sampleSeconds == 0 ? 0. : travelledDistance / sampleSeconds;
        const double frontSpeed = frontSampleSeconds == 0 ? 0. : frontTravelledDistance / frontSampleSeconds;
        dev.writeOptionalAttr(SUMO_ATTR_DENSITY, density, attributeMask, sampleSeconds == 0);
        dev.writeOptionalAttr(SUMO_ATTR_LANEDENSITY, laneDensity, attributeMask, sampleSeconds == 0);
        dev.writeOptionalAttr(SUMO_ATTR_OCCUPANCY, occupancy, attributeMask, sampleSeconds == 0);
        dev.writeOptionalAttr(SUMO_ATTR_WAITINGTIME, waitSeconds, attributeMask, sampleSeconds == 0);
        dev.writeOptionalAttr(SUMO_ATTR_TIMELOSS, timeLoss, attributeMask, sampleSeconds == 0);
        dev.writeOptionalAttr(SUMO_ATTR_SPEED, speed, attributeMask, sampleSeconds == 0);
        dev.writeOptionalAttr(SUMO_ATTR_SPEEDREL, speedLimit == 0. || sampleSeconds == 0 ? 0. : travelledDistance / sampleSeconds / speedLimit,
                              attributeMask, sampleSeconds == 0);
        dev.writeOptionalAttr(SUMO_ATTR_DEPARTED, nVehDeparted, attributeMask);
        dev.writeOptionalAttr(SUMO_ATTR_ARRIVED, nVehArrived, attributeMask);
        dev.writeOptionalAttr(SUMO_ATTR_ENTERED, nVehEntered, attributeMask);
        dev.writeOptionalAttr(SUMO_ATTR_LEFT, nVehLeft, attributeMask);
        dev.writeOptionalAttr(SUMO_ATTR_VAPORIZED, nVehVaporized, attributeMask, nVehVaporized == 0);
        dev.writeOptionalAttr(SUMO_ATTR_TELEPORTED, nVehTeleported, attributeMask, nVehTeleported == 0);
        dev.writeOptionalAttr(SUMO_ATTR_FLOW, density * frontSpeed * 3.6, attributeMask, frontSampleSeconds == 0);
        dev.closeTag();
        return;
    }
    const bool haveSamples = sampleSeconds > myParent->myMinSamples;
    const bool haveFrontSamples = frontSampleSeconds > myParent->myMinSamples;
    const bool haveSamplesOrDefault = haveSamples || defaultTravelTime >= 0.;
    bool haveTravelTime = haveSamplesOrDefault;
    double traveltime = myParent->myMaxTravelTime;
    if (haveSamples) {
        if (numVehicles > 0) {
            traveltime = sampleSeconds / numVehicles;
        } else {
            traveltime = myParent->myMaxTravelTime;
            if (frontTravelledDistance > NUMERICAL_EPS) {
                traveltime = MIN2(traveltime, myLaneLength * frontSampleSeconds / frontTravelledDistance);
            } else if (defaultTravelTime >= 0.) {
                traveltime = defaultTravelTime;
            } else {
                haveTravelTime = false;
            }
        }
    } else if (defaultTravelTime >= 0.) {
        traveltime = defaultTravelTime;
    }
    dev.writeOptionalAttr(SUMO_ATTR_TRAVELTIME, traveltime, attributeMask, !haveTravelTime);
    double overlapTraveltime = myParent->myMaxTravelTime;
    if (travelledDistance > 0.) {
        // one vehicle has to drive lane length + vehicle length before it has left the lane
        // thus we need to scale with an extended length, approximated by lane length + average vehicle length
        overlapTraveltime = MIN2(overlapTraveltime, (myLaneLength + vehLengthSum / sampleSeconds) * sampleSeconds / travelledDistance);
    }
    dev.writeOptionalAttr(SUMO_ATTR_OVERLAPTRAVELTIME, overlapTraveltime, attributeMask, !haveSamples || numVehicles > 0);
    dev.writeOptionalAttr(SUMO_ATTR_DENSITY, density, attributeMask, !haveSamples || numVehicles > 0);
    dev.writeOptionalAttr(SUMO_ATTR_OVERLAPDENSITY, overlapDensity, attributeMask, sampleSeconds == 0);
    dev.writeOptionalAttr(SUMO_ATTR_LANEDENSITY, laneDensity, attributeMask, !haveSamples || numVehicles > 0);
    dev.writeOptionalAttr(SUMO_ATTR_OCCUPANCY, occupancy, attributeMask, !haveSamples || numVehicles > 0);
    dev.writeOptionalAttr(SUMO_ATTR_WAITINGTIME, waitSeconds, attributeMask, !haveSamples);
    dev.writeOptionalAttr(SUMO_ATTR_TIMELOSS, timeLoss, attributeMask, !haveSamples);
    double speed = 0.;
    double frontSpeed = 0.;
    if (haveSamples) {
        speed = travelledDistance / sampleSeconds;
    } else if (defaultTravelTime > 0.) {
        speed = myLaneLength / defaultTravelTime;
    }
    if (haveFrontSamples) {
        frontSpeed = frontTravelledDistance / frontSampleSeconds;
    } else if (defaultTravelTime > 0.) {
        frontSpeed = myLaneLength / defaultTravelTime;
    }
    dev.writeOptionalAttr(SUMO_ATTR_SPEED, speed, attributeMask, !haveSamplesOrDefault);
    dev.writeOptionalAttr(SUMO_ATTR_SPEEDREL, speedLimit == 0. ? 0. : speed / speedLimit, attributeMask, !haveSamplesOrDefault);
    dev.writeOptionalAttr(SUMO_ATTR_DEPARTED, nVehDeparted, attributeMask);
    dev.writeOptionalAttr(SUMO_ATTR_ARRIVED, nVehArrived, attributeMask);
    dev.writeOptionalAttr(SUMO_ATTR_ENTERED, nVehEntered, attributeMask);
    dev.writeOptionalAttr(SUMO_ATTR_LEFT, nVehLeft, attributeMask);
    dev.writeOptionalAttr(SUMO_ATTR_LANECHANGEDFROM, nVehLaneChangeFrom, attributeMask);
    dev.writeOptionalAttr(SUMO_ATTR_LANECHANGEDTO, nVehLaneChangeTo, attributeMask);
    dev.writeOptionalAttr(SUMO_ATTR_VAPORIZED, nVehVaporized, attributeMask, nVehVaporized == 0);
    dev.writeOptionalAttr(SUMO_ATTR_TELEPORTED, nVehTeleported, attributeMask, nVehTeleported == 0);
    dev.writeOptionalAttr(SUMO_ATTR_FLOW, density * frontSpeed * 3.6, attributeMask, !haveSamples || numVehicles == 0);
    dev.closeTag();
}
 
 
double
MSMeanData_Net::MSLaneMeanDataValues::getAttributeValue(SumoXMLAttr a,
        const SUMOTime period, const double numLanes, const double speedLimit) const {
    switch (a) {
        case SUMO_ATTR_DENSITY:
            return MIN2(frontSampleSeconds / STEPS2TIME(period) * (double) 1000 / myLaneLength,
                        1000. * numLanes / MAX2(minimalVehicleLength, NUMERICAL_EPS));
        case SUMO_ATTR_LANEDENSITY: {
            const double density = MIN2(frontSampleSeconds / STEPS2TIME(period) * (double) 1000 / myLaneLength,
                                        1000. * numLanes / MAX2(minimalVehicleLength, NUMERICAL_EPS));
            return density / numLanes;
        }
        case SUMO_ATTR_OVERLAPDENSITY: {
            const double overlapDensity = MIN2(sampleSeconds / STEPS2TIME(period) * (double) 1000 / myLaneLength,
                                        1000. * numLanes / MAX2(minimalVehicleLength, NUMERICAL_EPS));
            return overlapDensity / numLanes;
        }
        case SUMO_ATTR_OCCUPANCY:
            return occupationSum / STEPS2TIME(period) / myLaneLength / numLanes * (double) 1000;
        case SUMO_ATTR_WAITINGTIME:
            return waitSeconds;
        case SUMO_ATTR_TIMELOSS:
            return timeLoss;
        case SUMO_ATTR_SPEED:
            return travelledDistance / sampleSeconds;
        case SUMO_ATTR_SPEEDREL:
            return speedLimit == 0. ? 0. : travelledDistance / sampleSeconds / speedLimit;
        case SUMO_ATTR_DEPARTED:
            return nVehDeparted;
        case SUMO_ATTR_ARRIVED:
            return nVehArrived;
        case SUMO_ATTR_ENTERED:
            return nVehEntered;
        case SUMO_ATTR_LEFT:
            return nVehLeft;
        case SUMO_ATTR_VAPORIZED:
            return nVehVaporized;
        case SUMO_ATTR_TELEPORTED:
            return nVehTeleported;
        case SUMO_ATTR_FLOW: {
            const double density = MIN2(frontSampleSeconds / STEPS2TIME(period) * (double) 1000 / myLaneLength,
                                        1000. * numLanes / MAX2(minimalVehicleLength, NUMERICAL_EPS));
            const double speed = frontTravelledDistance / frontSampleSeconds;
            return density * speed * 3.6;
        }
        default:
            return 0;
    }
}
 
// ---------------------------------------------------------------------------
// MSMeanData_Net - methods
// ---------------------------------------------------------------------------
MSMeanData_Net::MSMeanData_Net(const std::string& id,
                               const SUMOTime dumpBegin,
                               const SUMOTime dumpEnd, const bool useLanes,
                               const bool withEmpty, const bool printDefaults,
                               const bool withInternal,
                               const bool trackVehicles,
                               const int detectPersons,
                               const double maxTravelTime,
                               const double minSamples,
                               const double haltSpeed,
                               const std::string& vTypes,
                               const std::string& writeAttributes,
                               const std::vector<MSEdge*>& edges,
                               AggregateType aggregate) :
    MSMeanData(id, dumpBegin, dumpEnd, useLanes, withEmpty, printDefaults,
               withInternal, trackVehicles, detectPersons, maxTravelTime, minSamples, vTypes, writeAttributes, edges, aggregate),
    myHaltSpeed(haltSpeed)
{ }
 
 
MSMeanData_Net::~MSMeanData_Net() {}
 
 
MSMeanData::MeanDataValues*
MSMeanData_Net::createValues(MSLane* const lane, const double length, const bool doAdd) const {
    return new MSLaneMeanDataValues(lane, length, doAdd, this);
}
 
 
std::vector<std::string>
MSMeanData_Net::getAttributeNames() const {
    std::vector<std::string> result;
    result.push_back(toString(SUMO_ATTR_DENSITY));
    result.push_back(toString(SUMO_ATTR_LANEDENSITY));
    result.push_back(toString(SUMO_ATTR_OCCUPANCY));
    result.push_back(toString(SUMO_ATTR_WAITINGTIME));
    result.push_back(toString(SUMO_ATTR_TIMELOSS));
    result.push_back(toString(SUMO_ATTR_SPEED));
    result.push_back(toString(SUMO_ATTR_SPEEDREL));
    result.push_back(toString(SUMO_ATTR_DEPARTED));
    result.push_back(toString(SUMO_ATTR_ARRIVED));
    result.push_back(toString(SUMO_ATTR_ENTERED));
    result.push_back(toString(SUMO_ATTR_LEFT));
    result.push_back(toString(SUMO_ATTR_VAPORIZED));
    result.push_back(toString(SUMO_ATTR_TELEPORTED));
    result.push_back(toString(SUMO_ATTR_FLOW));
    return result;
}
 
 
double
MSMeanData_Net::getAttributeValue(const MSLane* lane, SumoXMLAttr a, double defaultValue) const {
    double result = defaultValue;
    const std::vector<MeanDataValues*>* edgeValues = getEdgeValues(&lane->getEdge());
    if (edgeValues == nullptr) {
        return result;
    }
    MeanDataValues* values = nullptr;
    if (!myAmEdgeBased) {
        values = (*edgeValues)[lane->getIndex()];
    } else {
        MeanDataValues* sumData = createValues(nullptr, lane->getLength(), false);
        for (MeanDataValues* meanData : (*edgeValues)) {
            meanData->addTo(*sumData);
        }
        values = sumData;
    }
    const SUMOTime myLastResetTime = 0; // XXX store last reset time
    const SUMOTime period = SIMSTEP - myLastResetTime;
    result = values->getAttributeValue(a, period, lane->getEdge().getNumLanes(), lane->getSpeedLimit());
    if (myAmEdgeBased) {
        delete values;
    }
    return result;
}
 
 
/****************************************************************************/