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MPC Research Reports
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Title:Adaptive Signal Control V: SCATS Evaluation in Park City, Utah
Authors:Peter T. Martin and Aleksandar Stevanovic
University:University of Utah
Publication Date:Jul 2008
Report #:MPC-08-200
Project #:MPC-284
TRID #:01110903
Keywords:adaptive control, signalized intersections, traffic data, traffic delays, traffic flow, traffic signal control systems, traffic signals, traffic signal timing, travel time



In 2005, the Utah Department of Transportation (UDOT) installed the Sydney Coordinated Adaptive Traffic System (SCATS) in Park City, Utah, on its network of 14 signalized intersections. A field evaluation compared previous time-of-day actuated-coordinated signal timings with those dynamically computed by SCATS. Travel times, travel time stopped delay and number of stops were collected by driving probe vehicles on the major routes. Intersection stopped delays were also collected to investigate traffic performance on side streets. Overall, SCATS consistently reduced travel times and travel time stopped delay, the average number of stops, and intersection stopped delay for major and minor through movements.

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