一种考虑速度引导的路径信号协调控制模型

A route signal coordination control model considering speed guidance

城市路径信号协调控制不同于干线协调控制,通常存在车辆转向行为,故需要对路径进行子区划分,而各子区相对独立,使路径控制缺乏连续性。因此,本文提出了一种考虑速度引导的路径信号协调控制模型,对各路径协调子区之间进行合理的速度引导控制。在此基础上,加入了路口转向系数及速度引导变量约束,对传统的干线绿波协调控制模型进行改进,得到可适用于城市路径的不对称双向绿波带宽模型。最后,以苏州市工业园区某日常通勤主路径为例,选取早高峰配时方案及流量数据,进行模型测试与仿真验证,相比于路径现状配时方案,本文模型所得到的路径总延误降低了10.8%,车辆总停车次数减少219次,占比6.7%,车辆平均速度提升了5.6%。

The coordinated control of urban route signal is different from the coordinated control of trunk lines.There is usually vehicle steering behavior.It is necessary to divide the route into sub areas.Each sub area is relatively independent,which makes the route control lack continuity.Therefore,a route signal coordination control model considering speed guidance is proposed in this paper to carry out reasonable speed guidance control between the route coordination sub areas.On this basis,the intersection turning coefficient and speed guidance variable constraints are added to improve the traditional trunk line green wave coordination control model.An asymmetric two-way green wave bandwidth model suitable for urban routes is obtained.Finally,taking a daily commuter main route in Suzhou Industrial Park as an example,the morning peak timing scheme and flow data are selected for model testing and simulation verification.Compared with the current route timing scheme,the total delay of the route obtained by this model is reduced by 10.8%,the total number of vehicle stops is reduced by 219,accounting for 6.7%,and the average speed of vehicles is increased by 5.6%.