The invention discloses a single-intersection signal timing optimization method based on trajectory data. The method comprises the following steps of: acquiring original signal timing information of an intersection; acquiring historical trajectory data of floating vehicles in the same time period on a road section associated with the intersection, and solving queuing positions of the floating vehicles in each period; predicting the queuing length in each phase of the period of the intersection according to a Bayesian model and a probability distribution theory; and calculating the optimal timing duration of each phase on the basis of a starting wave theory. According to the method, the actual situation that the permeability of current road network floating vehicles is low is comprehensively considered, and different methods are adopted to calculate traffic scenes with different permeability. According to the method of the invention, the intersection queuing length estimation method iscombined with the traffic wave theory to carry out timing on the intersection; the massive trajectory data are fully utilized; the advantages of statistics and traffic wave theory are fully combined;the intersection signal timing method based on the trajectory data is established; the utilization rate of green light duration of each phase is improved; and the delay of the intersection is effectively reduced.
本发明公开了一种基于轨迹数据的单交叉口信号配时优化方法,方法包括以下步骤:获取交叉口的原始信号配时信息;获取与交叉口关联路段上同一时段浮动车的历史轨迹数据,求取各浮动车在各周期内的排队位置;根据贝叶斯模型与概率分布理论预测交叉口周期各相位内的排队长度;结合启动波理论计算各相位的最佳配时时长。本发明综合考虑了当前路网浮动车渗透率较低的现实情况,采用不同方法对不同渗透率的交通场景进行计算。本发明利用交叉口排队长度的估计方法结合交通波理论对交叉口进行配时,充分利用海量轨迹数据,充分结合了统计学与交通波理论的优势,建立了基于轨迹数据的交叉口信号配时方法,提高了各相位绿灯时长利用率,有效降低交叉口延误。
Single-intersection signal timing optimization method based on trajectory data
基于轨迹数据的单交叉口信号配时优化方法
2020-10-30
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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