Improving performance of coordinated signal control systems using signal and loop data.

713908034California PATH Research Report.PDFTech ReportUCB-ITS-PRR-2010-7Traffic signsTraffic signalsCaliforniaPartners for Advanced Transit and Highways (Calif.)Li, MengZhang, LipingSong, Myoung KyunWu, GuoyuanZhang, Wei-BinZhang, LihuiYin, YafengPartners for Advanced Transit and Highways (Calif.)University of California, Berkeley. Institute of Transportation StudiesCalifornia. Dept. of TransportationNTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Control DevicesUS Transportation CollectionIn this project, a traffic data collection system based-on the iDEN wireless network hasbeen developed, lab tested and preliminarily tested in the field. The objective of thesystem is to provide a cost-effective and easy-to-maintain system that could still reliablyprovide traffic data over the wireless link.The project team developed an arterial performance measurement method that is based onthe signal infrastructure data collected at PT2 Lab, U.C. Berkeley. The performance of theproposed model is illustrated by using a simulation study. The six-signal simulationnetwork covers both heavily congested and light traffic intersections. The proposedmodel works well at both the intersection level and the arterial level. Estimation errors oftravel time, number of stops and travel time reliability are insignificant