Queue Length Estimation Algorithm for Signalized Intersection Using Sectional Travel Time Information
نویسندگان
چکیده
Abstract: The purpose of this research is to develop algorithm calculating the traffic queue length which is main variable for effective operation at signalized intersection. For the methods to calculate the traffic queue length, there are queue theory and shock wave theory. And, the estimation of traffic queue length by existing point detection system utilizes traffic queue theory calculating traffic queue length through the number of vehicles, this algorithm intended to estimate more accurate length of traffic queue by calculating the length of physical traffic queue through the shock wave theory. For the stream of algorithm, the information of individual vehicle's travel time is gathered by ground detector in upstream detector and downstream detector, the coordinate of individual vehicle on the working drawing is estimated and the speed of shock wave creating traffic queue through the value of coordinate estimated for one cycle is calculated. The suitability of algorithm is evaluated by Simulation.
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