快速路出口匝道衔接道路控制仿真研究

针对快速路出口匝道区域拥挤问题，建立了出口匝道衔接道路（即辅路）控制仿真模型，并通过Vissim验证，对比分析出口匝道衔接道路（辅路）在不控制、让行控制、定时控制和自适应信号控制下交通流的运行特性以及控制效果。通过对仿真结果的分析研究发现：在辅路让行出口匝道车辆优先驶出时，控制效果最佳；当让行控制失效影响出口匝道车辆驶出时，辅路控制是必要的；自适应信号控制能够取得最好的控制效果，总延误约可减少42％，特别是对主线交通状态的改善更可达46％以上。

Simulation of the Frontage Road Control Near the Expressway Exit Ramp

In order to solve the congestion problem in the exit ramp area,the frontage road control model was developed and simulated by the Vissim.The traffic flow characteristic and the performance of frontage road control were analyzed under no control,priority control,pre-timed control and adaptive control.The results shows that the frontage road give-way control can get a optimal performance when the exit ramp vehicles have the priority,and the frontage road control is necessary when the traffic load exceeding 50...