单交叉路口交通灯实时配时算法的研究

Algorithm of Real-time Distributing Time for Single Crossroad Traffic Light

研究了城市道路交通信号实时控制系统的问题,重点论述了单交叉路口交通信号灯控制(点控制)模型的实时配时算法。根据城市交通流分布规律,设计出流量序列生成算法来模拟实时交通流;通过建立信号灯动态模型从而获得最佳周期长度和有效绿灯时间,然后采用模糊控制算法对信号灯配时方案进行实时的动态优化调整,并建立基于排队的车辆延误模型来对模糊控制算法进行评价。计算机模拟仿真的结果表明所设计实时配时方案比定时配时方案有显著的改善。

This paper studies the real-time control system of traffic signal lights in city road and sets forth real-time distributing time algorithm of traffic lights control model （point control model） in single crossroad.Flux sequence creating algorithm is designed to simulate real-time traffic flow in according to distributed rules of traffic flow.Consequently,optimized cycle time and effective green light time are got by dynamic model of traffic light.Then,fuzzy control algorithm is used to optimize the time dynamically with traffic delay model based on vehicle queue to evaluate the algorithm.