基于博弈的交通信号配时优化

Optimization on Time Allocation of Traffic Signal based on Game Theory

根据博弈理论的思想,提出基于博弈的信号配时优化方案,力求解决交叉口信号的协调控制问题。从模型的角度,首先采用二人合作博弈,确定交叉口放行方向,再进行第二层博弈,采用二人非合作博弈,确定该方向上各信号灯放行时间。基于博弈的信号配时优化方案优化了路段进口方向的交通压力,降低平均延误时间与停车延误时间。使用VISSIM5.3,对北京市朝阳区南磨房路与西大望路交叉口进行仿真,以车辆平均延误时间和停车延误时间作为评价指标,对优化前与优化后信号配时进行对比。仿真结果表明:该方法的车辆总平均延误时间与固停车延误时间分别优化了29.52%、34.17%,较大程度上提高了交叉口的车辆行驶效率。

According to the game theory,agame-based signal timing optimization scheme is proposed with the purpose to solve the control problem of signal coordination at intersections.From the perspective of the model,first the cooperative game is adopted to determine the direction of intersection release,and then non-cooperative game is used to determine the direction of the light release time.The game-based signal timing optimization scheme effectively alleviates the traffic pressure in the entrance direction of each section and reduces the average delay time and the fixed stop delay time.Finally using VISSIM5.3,the intersection between the Nanmofang Road and West Dawang Road is simulated,the average delay time of vehicles and parking delay time as evaluation index,the signal timing before and after the optimization is compared.The simulation results show that the total average vehicle delay time and fixed parking delay time of the method are optimized by 29.52%and 34.17%respectively,and the vehicle traffic efficiency of the intersection is effectively improved.