连续流交叉口信号协调配时及延误模型

为解决连续流交叉口车辆二次停车和人-车冲突问题，防止车辆排队溢出，破坏连续流交叉口稳定的运行状态，提出人-车信号协调优化控制策略。根据车流运行特征，协调主、预信号配时，优化信号相位方案，以车均延误最小为目标构建优化模型。通过仿真对比可知，本文模型计算的延误估算误差在5%以内。通过案例分析可知，现状方案南北左转车均延误和车均停车次数是优化方案的2倍以上，说明优化方案避免了车辆二次停车；从整个交叉口来看，优化方案在两种流量场景下，车均延误分别降低了27.8%、18.5%，提升了交叉口运行效率。通过敏感性分析发现，移位左转车道长度在100 m时，综合效益最佳。

Signal Coordination Timing and Delay Model for Continuous Flow Intersection

To reduce the stopping of vehicles at continuous flow intersection and the conflicts between pedestrians and vehicles, and to prevent vehicle queue overflow from destroying the stable operation state of continuous flow intersection, a coordinated optimal control strategy of pedestrians and vehicles signal is proposed. According to the characteristics of traffic flow, the main pre-signal timing is coordinated, the signal phase scheme is optimized, the delay calculation model is established, and the optimization model is constructed to minimize the average vehicle delay. The simulation results show that the delay estimation error of the delay calculation model is less than 5%. Through the case analysis, the average vehicle delay and vehicle stopping in the current scheme are more than 2 times longer than the optimization scheme, which shows that the optimization scheme avoids the secondary stops of vehicles. From the perspective of the whole intersection, the average vehicle delay of the optimization scheme in the two traffic scenarios is reduced by 27.8% and 18.5%, respectively, which improves the operational efficiency of the intersection. Through sensitivity analysis, it is found that the comprehensive benefit is the best when the length of the shifted left turn lane is 100 m.