An optimization method for signal timing parameters of single-point intersection based on bayonet data

Abstract

The invention provides a single-point intersection signal timing parameter optimization method based on bayonet data. Existing urban intersection signal control is mostly based on profile data of an annular coil detector arranged behind a parking line, and if the detector is badly damaged, travel time, delay and other traffic flow evaluation parameters used for traffic control can not be obtained. According to the basic idea of the method, a bayonet electronic police system is used for obtaining vehicle license plate recognition data, travel time and delay of all phase traffic flow from an upstream intersection to a current intersection are obtained by matching upstream vehicle license plates and downstream vehicle license plates, a signal cycle is obtained through phase saturation degree optimization, and effective green light time of each phase is obtained through optimization according to delay change conditions of different phases. The method for intersection signal timing by means of existing electronic police data is provided, and accordingly investment for arranging intersection detectors can be reduced, and intersection traffic control efficiency is effectively improved.

Description

technical field [0001] The invention relates to a bayonet-based single-point intersection signal timing parameter optimization method, which is used for urban road traffic control and belongs to the field of intelligent traffic research. Background technique [0002] Single-point intersection signal timing refers to using the traffic flow parameters obtained from the detector to optimize the signal timing parameters of the intersection in real time according to the changes in traffic flow, time occupancy, etc., to improve the traffic capacity of the intersection , to reduce vehicle delays at intersections. The optimization of signal timing parameters at single-point intersections is the premise and foundation of coordinated control of arterial and regional traffic, and the basis of urban traffic control, which can effectively improve the efficiency of road network operations. The signal timing parameters of traditional single-point intersections are optimized by using the t...

AI Technical Summary

Problems solved by technology

Since the fixed coil detector is easy to damage and difficult to repair, once the loop coil detector is damaged, it will have a serious impact on the signal timing optimization of single-point intersections

At the same time, the traffic flow parameters obtained by using fixed detectors cannot effectively reflect the traffic operation conditions of the entire intersection area, so there will be a lag in signal timing optimization

Images