基于相位差波动宽度的城市干线绿波协调控制方法

Urban main line green wave coordinated control method based on phase difference fluctuation width

在考虑城市道路路段交通流速度波动特性的基础上,提出相位差波动宽度概念。以城市道路交叉口协调相位绿灯起、停时刻与相位差波动宽度间关系为约束条件,通过遍历交叉口下行与上行方向绝对相位差时刻关系的方式,提出一种考虑相位差波动宽度的干线协调控制方法,该方法对包含非对称放行相位和叠加相位的干线协调方式均适用。通过算例与绿灯起点、终点控制,对两种绿波带设计方案进行对比分析,同时利用仿真手段验证不同绿波带设计方案的控制效益。通过对比不同绿波带方案绿波时距图和VISSIM仿真结果,发现应用此方法设计的绿波带方案协调控制效益较为突出。

On the basis of the consideration of the speed fluctuation characteristics of the traffic flow of the urban road,the concept of phase difference fluctuation width is put forward.The relationship between the starting and stopping time of coordinated phase green light and the fluctuation width of phase difference at urban road intersections is taken as the constraint conditions.By traversing the absolute phase difference time relationship between the downstream and upstream directions of intersections,a main line coordinated control method considering the fluctuation width of phase difference is proposed.This method is applicable to the main line coordination mode including asymmetric release phase and superposition phase.The two green wave band design schemes are compared and analyzed by a numerical example and green light start point end point control.In addition,the control benefits of different green wave band design schemes were verified by simulation.By comparing the simulation results of green wave time⁃distance graph and VISSIM of different green wave band schemes,it is found that the coordinated control benefits of green wave band schemes designed with this method are outstanding.