Single point signal control optimization method based on intersection vehicle passing records

Abstract

The invention discloses a single point signal control optimization method based on intersection vehicle passing records. The vehicle passing records of the stop line of entrances of an intersection in all directions are acquired. A vehicle passing signal timetable is generated. According to the signal timing phase, lanes are grouped. A lane with the maximum passing vehicles in a cycle is selected as the key lane of the lane group in the cycle. A key lane vehicle passing signal map and a headway time signal map are generated. Two maps are combined to analyze the queuing situation after the stop line and the vehicle traffic during green time. The green time utilization index of the corresponding phase is analyzed. Statistical analysis is carried out on the green time utilization rate in each cycle. Based on a statistical analysis result, if green time surplus exists in the green time utilization rate in each cycle, the green time is shortened. The method can be used to analyze the effect of the existing timing scheme of the intersection based on the vehicle passing monitoring result of an intelligent bayonet, and can carry out effective signal timing optimizing accordingly.

Description

technical field [0001] The invention belongs to the technical field of traffic signal control, in particular to a single-point signal control optimization method based on vehicle passing records at intersections. Background technique [0002] Single-point traffic signal control is the most important road traffic signal control method at present. An appropriate signal timing scheme can allocate reasonable right-of-way for vehicles waiting to pass at the intersection, so as to reduce the delay or queuing length at the intersection, and improve the traffic quality of the intersection. traffic efficiency. Multi-period fixed signal timing is currently the most widely used single-point traffic signal control method. According to the historical average data of peak, off-peak, and low-peak periods, the signal timing parameters are calculated to generate a control plan for the corresponding period. However, traffic flow has random characteristics, and a fixed signal timing scheme is...

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Problems solved by technology

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a single-point signal control optimization method based on crossing records at intersections, which solves the problems caused by the waste of green light time at signalized intersections in the prior art. The problem of reduced traffic efficiency at intersections

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