Adaptive intersection traffic signal control method of trunk road priority

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Adaptive intersection traffic signal control method of trunk road priority

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GUAN ZHENG / ZHANG XUEJIE / QIAN WENHUA

The invention discloses an adaptive intersection traffic signal control method of trunk road priority. The method is characterized in that firstly, an intersection is described as a switching service system, a channelized lane is taken as a queue, a traffic signal controller is served as a center controller, a complete service mode is used to calculate time of each channelized lane which occupies intersection resources and each historical monitoring data of going through the intersection; simultaneously, longest green light time upper limit is arranged on the signal controller, when trunk road green light time is longer than the green light time upper limit, the signal controller calculates a prolongation green light time probability according to backoff algorithm so as to prolong the green light time probability and allow the trunk road green light time to prolong; when tutoring green time is longer than the green light time upper limit, green light signal timing is performed according to the green light time upper limit. The method in the invention is conducive to traffic efficiency increase.