SOUND Ver.5, a traffic simulator for wide area road networks.

Simulation OUrban road Network with Dynamic route choice

SOUND (Simulation On Urban road Network with Dynamic route choice) is a mesoscopic traffic simulation model which was originally developed in the Institute of Industrial Science, the University of Tokyo, and was commercialized by i‐Transport Lab. Co., Ltd., a venture company in Tokyo.
It is applicable to the road network of the 1 – 100 km scale to evaluate various traffic control & management scheme. The latest version of SOUND is merged with AVENUE, a microscopic traffic simulation, and shares its user‐friendly graphic user interface.

Fig. Velocity of Tokyo on simulation            Fig. Animation Image
Special Features of SOUND
  • applicable to a large urban scale road network.
  • a mesoscopic traffic simulation model which deals discrete vehicles with 1 second update interval according to the fundamental diagram of traffic flow.
  • dynamic route choice capability taking account traffic congestion, travel time, toll charge, etc.
  • incident modeling for lane closures and road closures.
  • traffic signal control capability for an intersection with auxiliary lanes and regulations on turning direction.
  • customization on traffic information provision and route guidance service.
Software Capability
  • interactive data editing through GUI.
  • layered management for flexible data build.
  • 2D/3D animation of vehicle motions.
  • recording animation movie.
  • import digital road map and GIS polygons for zones.
  • project administration mode to put related cases in order.
  • batch calculation mode to run multiple cases at once.
Fig. Zone Boundary                Fig. 3D animation
Fig. Signal control               Fig. CO2 estimation
Case Studies
  • Congestion mitigation by the construction of new by‐pass roads.
  • Time saving with the route guidance service using probe data.
  • CO2 reduction through the penetration of eco‐driving assistance.
  • Evacuation planning using vehicles at large‐scale disaster
  • Traffic regulation planning for a big event or an incident.
  • Toll revision and traffic demand switchover from arterial roads.
  • Advanced traffic control such as variable channelization, etc.