为提升过饱和状态下交叉口群交通信号控制的效率,提出了一种基于NSGA-Ⅱ算法的信号配时优化方法.交叉口群关键路径上通行车数最大及平均排队比最小被选择为过饱和状态信号配时方法的优化目标.应用基于VISSIM软件信号控制程序接口的仿真环境,在输入实际观测数据的情况下,对所提算法和Synchro配时优化软件所生成的信号配时方案的效率进行对比.结果表明,所提出算法生成的信号配时方案能更有效地管理过饱和状态下交叉口群的交通流,具有优化过饱和状态信号配时方案的能力. In order to improve the efficiency of traffic signal control in intersection group under supersaturated condition, a new method of signal timing optimization based on NSGA-Ⅱ algorithm is presented. The maximum number of traffic on the critical path and the minimum average queuing ratio Saturated state signal timing method optimization target.Using the simulation environment based on VISSIM software signal control program interface, under the condition of inputting the actual observation data, the efficiency of the proposed timing synchronization scheme and Synchro timing optimization software The results show that the signal timing scheme generated by the proposed algorithm can effectively manage the traffic flow at the intersection group in the over-saturated state and has the ability to optimize the timing scheme of the supersaturated state signal.