Chapter
Apr 26, 2012
Research on the Optimal Method of Cycle Length for Signalized Intersection
Authors: Hongqiang Li, Ph.D., Dianhai Wang, and Zhaowei QuAuthor Affiliations
Publication: Applications of Advanced Technologies in Transportation Engineering (2004)
Abstract
Webster's method (TRRL) and ARRB method are the main timing methods for isolated signalized intersection. But they are not adequate for high density and low traffic flow, and highly saturated traffic conditions. A traffic intensity model is established in this paper as the optimized index of cycle length according to two parameters, traffic flow and time occupancy. The optimized models were given for ordinary 2–5 critical phase intersection. The validation of the method was testified from a videotape of intersection operation at a series of intersections of Chanchun in China. The value of cycle length can match the actual traffic conditions, and is better than the value computed by TRRL method or ARRB method. The c - I method can be used for cycle length optimization. A timing illustration for 4 critical phase intersection is given.
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© 2004 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Hongqiang Li, Ph.D.
Transportation College, Jilin University, Changchun 130025, P.R.China
Dianhai Wang
Professor, Transportation College, Jilin University, Changchun 130025, P.R.China
Zhaowei Qu
Lecturer, Transportation College, Jilin University, Changchun 130025, P.R.China
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