Research on Intersection Phase Timing Calculating Method Based on Interval Detection Data

Traditional traffic detectors can only obtain cross-section traffic detection data, which restricts the practical application level of signal control theory. At present, the new detector has created better data application conditions for traffic signal control. Millimeter-wave radar can track and acquire traffic flow, speed, and occupancy data of multiple targets in a certain interval. Based on this interval detection data, a new method of expressing traffic state is proposed. The reliability of this method for expressing supersaturated traffic state is illustrated by the analysis of actual detection data. Finally, a new method of intersection phase timing calculation based on interval detection data is proposed. Taking an actual intersection in Tongzhou as an example, based on the actual collected interval detection data, the traffic signal timing scheme under unsaturated and over-saturated conditions is calculated by using the intersection signal timing algorithm proposed in this paper, and compared with the algorithm given by TRANSYT. The results show that the new method of signal control at single intersection can effectively reduce the delay of vehicles at intersections, and has a significant effect on traffic congestion in the direction of traffic congestion, and achieves a good effect of improving the level of signal control services at intersections.