01024576

Component

The development of micro-simulation traffic modeling software over the last decade has greatly contributed to the traffic engineer’s tools that are available for analyzing complex traffic conditions and evaluating traffic management solutions. This paper reports on just one application, the evaluation of an area wide traffic control system using fixed time versus co-ordinated adaptive timing strategy for traffic signals. The SCATS (Sydney Co-ordinated Adaptive Traffic System) software is developed by the Roads and Traffic Authority (RTA) of New South Wales, Australia and has recently been adapted to communicate with vehicle-based simulation software. SCATS is not only used in Australia but throughout the world including USA, Mexico, and Asia. The traffic simulation model replaces the vehicles in the real world and transmits detector actuation messages SCATS central computer. These messages (detector “on”, detector “off”) are passed to the WinTraff software which emulates the personality logic of the local signal controller. After WinTraff has pre-processed the detector messages it passes data (traffic flow, non-occupancy etc.) to the SCATS simulation version. This version is the same as the real world SCATS except it runs faster than real time and has some house keeping processes. The combined software of WinTraff and SCATS in simulation is referred to as SCATSIM. Enabling SCATS to interface with micro-simulation models opens up a whole new range of possibilities in system optimization and evaluation, ITS application testing, and so on. The results reported in this paper demonstrate significant traffic benefits gained from co-ordinated adaptive strategies.

01020180

06-1984

English

13p

2006

Transportation Research Board 85th Annual Meeting

CD-ROM

Figures (4) ; References (4) ; Tables (1)

Incident detection; Intelligent transportation systems; Microscopic traffic flow; Microsimulation; Software packages; Traffic engineers; Traffic oversaturation; Traffic signal control systems; Variable message signs

SCATS (Computer program)

Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2006 Paper #06-1984

TRIS, TRB, ATRI

Mar 3 2006 10:50AM