单平交口定时信号控制方案是协调控制和线控的基础。文章针对当前的交通特性和环境,对基于TRRL法的平交口信控配时方案进行优化分析,主要对左转专用车道饱和流量的计算及修正系数进行优化,进而影响其配时结果。经实例验证,优化后的方案可明显降低平交口的延误时间,增强平交口的通行效益。 Single Ping Jiaokou timing signal control program is to coordinate the basis of control and wire control. In this paper, according to the current traffic characteristics and environment, the optimization of the CRJ timing scheme based on the TRRL method is optimized, which mainly optimizes the calculation and correction coefficient of the left-specific lane saturation flow and further affects the timing result. After the example verification, the optimized scheme can obviously reduce the delay time of Ping Jiaokou and enhance the traffic efficiency of Ping Jiaokou.