Other/Glossary

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A#

• application

  An application is a computer program, herein, an "application" mostly means one of the main, compiled programs that are included in the SUMO package.

• additional-file

  A file that can be included in a sumo configuration. This is needed to load pois, shapes, bus stops and variable speed signs. Refer to the format description for details.

C#

• connection(s)-file

  An XML-file describing connections between edges or lanes, see connection descriptions for importing networks defined as XML

D#

• DELPHI

  Deutschlandweite Echtzeit Verkehrs-Lage und Prognose im Ereignisfall

• destination

  The position of the end of a vehicle journey. Mostly a TAZ processed by OD2TRIPs within which a "sink" edge lies

• detector

  An artificial device for object (mainly vehicle) states recognition and/or logging

• DFD

  Deutsches Fernerkundungsdatenzentrum des DLR

• district

  see TAZ

• DLR

  Deutsches Zentrum für Luft- und Raumfahrt

• DUA

  Dynamic User Assignment

• DUE

  Dynamic User Equilibrium

E#

• edge

  A single-directed street connection between two points (junctions/nodes). An edge contains at least one lane

• edge(s)-file

  A XML-file describing edges of a road network, see edge descriptions for importing networks defined as XML

F#

• FCD

  Floating Car Data

I#

• induction loop

  A detector placed on a certain position on a lane which recognizes vehicles passing it and logs their attributes (speed, size, etc.)

J#

• junction

  The place an edge begins or ends at (same as node)

• junction logic

  The part of a junction which determines the vehicle behaviour at the according junction by using certain right-of-way - rules

L#

• link

  A connection between two lanes within a junction. Within microsim, each lane has links (connections) to the following lanes. A link contains the information whether the vehicle has to decelerate in front of the junction.

M#

• macroscopic

  In a macroscopic traffic (flow) simulation, the atomic instances are roads; the flow is simulated directly (see microscopic)

• mesoscopic

  In a mesoscopic traffic (flow) simulation, the streets are partitioned into sections which multiple vehicles may enter and leave at each simulation step

• microscopic

  In a microscopic traffic (flow) simulation, the atomic instances are vehicles; the flow is simulated by simulating the vehicles (see macroscopic)

• multimodal

  A multimodal traffic simulation is capable of processing different types of traffic (busses, trains, vehicles etc.)

N#

• (street) network

  In our terms, a network is the combination of junctions (nodes) and edges (streets)

• node

  A node (junction) is a single point were at least one edge (road) starts or ends

• node(s)-file

  A XML-file describing nodes of a road network, see node descriptions for importing networks defined as XML

O#

• O/D-matrix (od-matrix)

  Origin/Destination-matrix; describes how many vehicles are moving from each origin to each destination within a certain time period

• option

  A parameter for the application which determines what or how an application shall do

• origin

  The position of the begin of a vehicle journey. Mostly a TAZ processed by OD2TRIPs within which a "source" edge lies

P#

• poi

  short for "point of interest"; A position of an object that may be interesting

R#

• route

  A route is a complete description of a vehicle's path over the network; it contains the information when the vehicle departs (the route starts) and over which edges the vehicle shall drive

S#

• script

  A small computer program which normally doees not have to be compiled. The SUMO package includes several scripts, most written in Python

• source

  A source means a place at which vehicles are inserted into the street network

• source-tar-ball

  A file containing the sources (program code) for a project. The source code must be compiled in order to get the runnable application. It is called "tar-ball" because of using the application "tar" to join all the source files into a single file.

• submicroscopic

  In a submicroscopic traffic (flow) simulation, the atomic instances are parts of the vehicle or the driver (gearing or behavior is modelled)

T#

• TAZ

  Traffic Assignment Zone, a collection of edges describing a part of a road network's area (also called 'district')

• TLS

  traffic lights system

• trip

  A reduced information about a vehicle's movement; contains only the departure time, the begin, and the end edge. Must be transformed into a route using a router for being used within the simulation

• trip-table (trip list)

  A file containing several trips

• TS

  Institute of Transportation Systems at the German Aerospace Center (DLR)

• TS-BS

  TS Standort Braunschweig

• TS-BA

  TS Standort Berlin-Adlershof

• type(s)-file

  A XML-file describing types of streets, see type descriptions for importing networks defined as XML

X#

• XML

  "eXtensible Markup Language is a universal format for structured documents and data" as the w3c says. Further information may be found at http://www.w3c.org/XML/ or http://en.wikipedia.org/wiki/XML. Most of the data read and written by SUMO is stored as XML, see also the page on file types.

• XSD

  XML Schema Definitions "... provide a means for defining the structure, content and semantics of XML documents" as the w3c says. Further information may be found at http://www.w3.org/XML/Schema or http://en.wikipedia.org/wiki/XML_Schema_%28W3C%29. A part of the XML data formats used by SUMO is covered by xsd, see the page on file types.

Z#