信号交叉口动态直右车道相位转变清空车道控制方法研究

Study of Signal Control Methods for Dynamic Straight Right Lane Phase Transition Clearing Lanes at Signalized Intersections

动态车道可以很好地解决交通上时空分配不均的问题,以减少交通拥堵,提高交叉口通行效率和时空资源利用率。但在动态车道相位转变时存在有一部分车辆还未驶离车道的情况,会对下一相位行驶的车辆造成延误。本文以动态直右车道车辆延误最小为目标,研究主、预信号同相位启亮时间差对车辆延误的影响,考虑道路状况、车流量、车速、车辆选择等因素,建立动态直右车道与主预交通信号协同优化模型。通过多个算例计算,以验证模型的合理性。最终可根据实时交通需求情况生成动态车道的信号优化方案。借助SUMO对优化方案进行仿真验证,将本文优化方法与定时信号配时方法在相同的假设条件下进行对比,实验结果表明,本文模型能更好地降低交叉口平均延误,实现时空利用率最大化。

Dynamic lanes can effectively address the issue of uneven spatial and temporal distribution in traffic,thereby reducing congestion and improving the efficiency of intersections and the utilization of spatial and temporal resources.However,during phase transitions of dynamic lanes,some vehi-cles may not have cleared the lane,causing delays for vehicles in the subsequent phase.This paper aims to minimize the delay of vehicles on straight-right dynamic lanes by studying the impact of the time difference between the main and pre-signal phase activation on vehicle delay.Considering factors such as road conditions,traffic flow,vehicle speed,and vehicle selection,a collaborative optimization model of straight-right dynamic lanes and main-pre-signal coordination is established.Several case studies are calculated to verify the rationality of the model.Based on real-time traffic demand,a signal optimization scheme for dynamic lanes can be generated.Simulation verification using SUMO is conducted to compare the proposed optimization method with the fixed-time signal timing method under the same assumptions.The experimental results indicate that the proposed model can better reduce average intersection delays and maximize spatial and temporal utilization.