考虑到站时间可靠性的有限公交优先信号控制

Limited bus priority signal control considering the reliability of arrival time

公交车有序到达公交站点可以减少乘客候车时间以及公交车运行成本。因此,为公交车打造系统的运行秩序、为管理者创造精细化的管理方法,可以有效缓解公交运营混乱及其对城市交通造成的负面影响,提高乘客出行的舒适度,提升公交服务水平。基于上述分析,本文提出了有限公交优先的信号控制方法。以公交车的行驶速度与实际交叉口状态为信息输入,预测公交车到达交叉口时间及前后公交车车头时距,将预测车头时距与期望车头时距比较,预估时间偏差,以公交车头时距偏差最小为目标,建立交叉口信号配时优化模型。经仿真实验发现,本文提出的控制策略可使公交车车头时距更接近于期望值,总体车头时距方差显著减小,公交系统的运行更加平稳有序。

Buses arrive at the bus stop in an orderly manner,which can save waiting time for passengers and reduce the cost of public transport system.Therefore,setting up a systematic operation order for buses and establishing an elaborate management model and control means for administrators can effectively relieve the negative effects to urban traffic caused by the disorder of public transport system.Based on the above analysis,this paper proposes a signal control method of limited bus priority.Taking the traveling speed of buses and the actual state of intersections as information input,the time of arrival of buses and the headway of buses before and after the intersections are predicted.The forecasted time headway is compared with the expected time headway,and the time deviation is estimated.With the minimum time headway deviation of buses as the goal,the intersection signal timing optimization model is established.The simulation results show that the control strategy proposed in this paper can make the bus time headway more close to the expected value,the variance of the overall time headway decreases significantly,and the bus system runs more smoothly and orderly.