基于实时延误的交叉口控制方案优化分析

Analysis on timing optimization method based on real-time delay at signalized intersection

针对信号交叉口延误—配时之间的复杂联系,通过对目前延误参数的获取情况进行分析,使用实时提取的周期延误值,借助K近邻预测算法,结合交叉口的流量对下个周期的延误进行预测,并使用预测的延误参数对下个周期的控制方案优化方法进行了研究。借助VISSIM仿真平台对提出的方法进行了分析,结果表明使用该方法对配时方案优化后的交叉口车辆延误可以降低13.52%,表明该方法在信号配时优化中有一定的应用前景。

There is a complex relation between delay and timing control design at signalized intersection.The present delay acquisition methods were analyzed.Using the measured real-time cycle delay and considering the traffic flow,the K-nearest neighbor algorithm was used to obtain the next cycle delay,and the forecasted delay was employed to study,the timing optimization of the next cycle.Based on an example in VISSIM simulation platform,it is proved that the optimization method described in the paper can decrease the intersection delay by 13.52%.Therefore,this method has potential applicability to signalized intersection control optimization in the future.