基于车路协同的多交叉口公交溢出控制方法

Multi-Intersection Bus Overflow Control Method Based on Vehicle-Road Coordination

针对多交叉口公交站台车辆溢出问题,基于车路协同背景,实时获取分析路网实时动态信息。根据信号灯状态、车辆数量、速度等信息,提出了交通流饱和度处于0.8~1情况下通过车速引导与信号控制协同解决多交叉口公交溢出的控制方法。综合考虑公交车、社会车辆乘客的经济效益及环境效益,选取站台及交叉口车辆排队长度、交叉口延误、车辆效益及环境效益等指标评价公交溢出控制方案效果,并选取典型道路多交叉口进行仿真实证。结果表明站台排队长度降低了17.67%,多交叉口的平均公交排队长度降低了25.25%,人均延误降低了21.42%,优化后单位车辆污染物排放浓度与路段车辆二氧化碳排放总量分别降低了12.25%和22.98%。

For the problem of vehicle overflow at bus stops at multiple intersections,real-time dynamic information of the road network is obtained and analysed in real time based on the background of vehicle-road coordination.Based on the signal status,number of vehicles,speed and other information,a control method is proposed to solve the multi-intersection bus overflow through speed guidance and signal control synergy under saturated flow(at 0.8-1)conditions.Considering the economic and environmental benefits of buses,social vehicle passengers,the station and intersection vehicle queue lengths,intersection delays,vehicle benefits and environmental benefits and other indicators are selected to evaluate the effect of the bus overflow control scheme,and a typical road multi-crossing is selected for simulation and empirical demonstration.The results show that platform queue length is reduced by 17.67%,the average bus queue length at multiple intersections is reduced by 25.25%,the per capita delay is reduced by 21.42%,and the concentration of pollutant emissions per unit of vehicle and the total carbon dioxide emissions of vehicles on the road section after optimisation are reduced by 12.25%and 22.98%,respectively.