Other/Glossary

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#

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

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

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#

  • 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

X#