• Native 64 bit applications
  • Multiple-Core/Thread SSAM Conflict Analysis
  • Parallel processing Surface/Freeway vehicles
  • Distributed Architecture Through WCF
  • Multiple run could be deployed on different CPU simultaneously
  • Components based, related to real world, such as vehicles, detectors, traffic control systems, etc.
  • Both data and function access for commonly used components
  • Multiple network protocol support (HTTP, TCP/IP, SOAP)
  • Cross platform and mobile interface (through HTTP/SOAP)
  • Almost any programming language that supports WCF: C#, C++, VB, html, Python, etc.
  • API functions that allow the executive system to access and modify simulation data, such as vehicle desired speed, turn code, destination, etc., and to access and modify fixed-time signal parameters, such as duration of green time or current interval
  • API Examples showing how to interface with user developed traffic signal control algorithms, lane changing/car following algorithms through ETAPI.

Advanced Computing Features


Most Advanced APIs for Mobile/Distributed Computing

  • Interfacing with enhanced FHWA Open Source Traffic Signal Controller Algorithm
  • Standard NEMA Operations
  • Coordination and Transition Logic
  • One Controller/Complexed Intersections
  • Direct Texas 3/4 Diamond Interchange Phases
  • NTCIP based hardware-in-the-loop, NO CID needed
  • Compatibility with existing TRF files
  • Export to TRAFVU
  • Freeway diversion (Integrated Corridor Management)
  • Lane width effect on desired freeway speed
  • Runs on Linux (theoretically Mac OS and more)
  • Vehicle-type exclusions by lane
  • Complicated freeway-to-freeway direct connections without dummy links/nodes (Figure 2)
  • No 8000 entry and exit nodes
  • Variable time steps (could be as small as 0.01 s)
  • Allows path/turning percentage based simulation
  • Basic bicycle/pedestrian operation
  • Bus operations on Surface Street/Freeway
  • Remodeled Intersection Vehicle Movement Logic

Model Any Modern Network: No limitations!

A Research Project Sponsored by Office of Operations Research and Development
FHWA through US DOT Small Business Innovative Research

United Freeway & Street Simulation Algorithms

Figure 2 CORSIM (top) and ETFOMM (bottom) Freeway Weaving Link/Node Diagrams

Support to Safety Applications

  • Red light runner as an MOE
  • DCS dilemma zone allocation-built in
  • Integrated Surrogated Safety Assessment Model

Advanced Signal Traffic Control & Beyond

Unique Features


  • FHWA ETFOMM  Brochure - Draft
  • Pitt/IDM/ACC/CACC/Mixed car following logics                                 
  • Collision avoidance
  • Discretionary lane changing                                
  • Mandatory lane changing
  • Lane change acceptable risk
  • Path following vehicles