Mesoscopic and Combined Microscopic

Mesoscopic and Combined Microscopic/Mesoscopic Simulation for Traffic Networks


CONTRAM (CONtinuous TRaffic Assignment Model) is a suite of transport modelling software containing a mesoscopic simulation package for dynamic traffic assignment. Developed by the TRL (Crowthorne, Essex) and Mott MacDonald. "It combines a form of microscopic simulation of traffic quanta, called 'packets' by analogy with communications networks, with a macroscopic time-dependent traffic model. Includes dynamic matrix estimation and ITS modelling facilities." (July 2003).

DynaMIT, from the Massachusetts Institute of Technology

"DynaMIT is a state-of-the-art, real-time computer system for traffic estimation, prediction, and generation of traveler information and route guidance. It supports the operation of Advanced Traveler Information Systems (ATIS) and Advanced Traffic Management Systems (ATMS) at Traffic Management Centers (TMC). Sponsored by the Federal Highway Administration (FHWA) with Oak Ridge National Laboratories (ORNL) as the program manager, DynaMIT is the result of approximately 10 years of intense research and development at the Intelligent Transportation Systems Program of the Massachusetts Institute of Technology." (July 2003)

DYNASMART, from the University of Texas at Austin

"DYNASMART-X is a state-of-the-art real-time Traffic Estimation and Prediction System (TrEPS) for effective support of Advanced Traffic Management Systems (ATMS) and Advanced Traveler Information Systems (ATIS). DYNASMART-P is a state-of-the-art dynamic network analysis and evaluation tool conceived and developed at the University of Texas at Austin."(July 2003)


"METROPOLIS proposes an interactive environment which simulates automobile traffic in large urban areas. The core of the system is a dynamic simulator which integrates commuters' departure time and route choice behaviors over large networks: Drivers are assumed to minimize a generalized travel cost function which depends on travel time and schedule delay. This simulator is based on a behavioral driver information process. It allows real-time and off-line simulations. The system also includes a scenario builder and a graphical results viewer." (July 2003)


"SATURN (Simulation and Assignment of Traffic to Urban Road Networks) is a suite of flexible network analysis programs developed at the Institute for Transport Studies, University of Leeds and distributed by WS Atkins of Epsom since 1981." SATURN can perform conventional 'static' traffic assignment for large networks and can also perform detailed microscopic simulation for smaller networks or components of a network. Can also iterate between these, simulating junctions in some detail and feeding the resulting performance functions back into the traffic assignment model. (July 2003).

Traffic Estimation and Prediction System (TrEPS), from the FWHA

A Dynamic Traffic Assignment (DTA) research project sponsored by the US Dept. of Transportation, Federal Highway Administration (FHWA). Concerned with "the development of a deployable, real-time Traffic Estimation and Prediction System (TrEPS) as well as an offline, planning version (TrEPS-P)". The program is based mainly on DynaMIT and DYNASMART (see which).