TIME PERIOD DIVISION METHOD FOR TRAFFIC SIGNAL CONTROL SCHEME TAKING INTERSECTION FLOW IMBALANCE SITUATION INTO CONSIDERATION

摘要

A time period division method for a traffic signal control scheme taking an intersection flow imbalance situation into consideration. The method comprises: acquiring intersection channelization information, traffic flow data and traffic signal control scheme basic information (S1); drawing a traffic flow all-day difference variation trend chart (S2); analyzing and integrating the traffic flow data, and preliminarily dividing a time period by using a Fisher optimal segmentation method (S3); increasing an overlapping phase on the basis of a fluctuation situation of a traffic flow difference obtained after normalization processing, determining a signal scheme phase sequence within a control time period, and superposing the signal scheme phase sequence onto a divided scheme time period so as to obtain an optimized and adjusted signal control time period (S4); and solving a traffic signal scheme within each time period, and optimizing the control time period and the signal scheme again on the basis of a traffic capacity so as to obtain a final time period division and signal scheme (S5). According to the method, the problem of traffic flow imbalance is taken into consideration while dividing a time period, and phase sequence configuration is performed by means of an overlapping phase, such that the simultaneous intelligent optimization configuration of the time period, a phase sequence and a traffic signal phase is realized, and the traffic management control efficiency is effectively improved.