结合车速引导的单点交叉口公交优先信号控制方法

Bus Priority Signal Control Method Combined with Speed Guidance at Single Intersection

为保障公交车队在绿灯期间不停驶通过交叉口,减少车辆截尾,给予公交车优先通行权,提出结合车速引导的单点交叉口公交优先信号控制方法.以交叉口综合延误最小为优化目标,考虑考虑公交车辆集结成车队的形式,集中连续通过交叉口.结合预指令信息引导车队合理调速,推迟或提前到达交叉口,以保障信控方案有效执行.以武汉市中北路交叉口为例开展仿真实验.结果表明:①该优化方案下公交相位绿信比区间为[0.35,0.44],为公交车辆提供较好的条件优先通行条件;②减少社会车辆与公交车辆交叉口车均延误与停车次数,降低交叉口进口道公交排队长队,提高单点交叉口通行效益.

In order to ensure that the bus fleet does not stop driving through the intersection during the green light period,reduce vehicle interception and give priority to the bus,a bus priority signal control method combined with speed guidance at single intersection was proposed.Taking the minimum comprehensive delay at intersections as the optimization objective,bus vehicles were considered to be assembled into a fleet,and pass through intersections continuously.Combined with the pre-instruction information,the motorcade should be guided to adjust the speed reasonably and arrive at the intersection late or early to ensure the effective implementation of the signal control scheme.Taking the intersection of Zhongbei Road in Wuhan as an example,the simulation results show that:①The green signal ratio interval of bus phase under this optimization scheme is[0.35,0.44],which provides better conditional priority for bus vehicles;②The proposed method can reduce the average vehicle delay and parking times at intersections between social vehicles and public transport vehicles,reduce the long bus queues at intersections,and improve the traffic efficiency at single-point intersections.