Intersection signal timing optimization method based on queue length of vehicles

Abstract

The invention discloses an intersection signal timing optimization method based on the queue length of vehicles. The maximum queue length is calculated according to the queue length of the vehicles at the end of a red light, according to the maximum queue length, green time required by a phase position is calculated, according to the green time of the phase position, a signal timing dual-loop structure is optimized, and a nesting phase position is made; compared with classical time-headway-based inductive control, the method obtains a better effect, is not sensitive to queue length error estimation, and can still obtain a good control effect even if some errors exit.

Description

technical field [0001] The invention belongs to the field of intelligent traffic control, and relates to an optimization algorithm for timing signal timing at an intersection by using vehicle queuing length. Background technique [0002] With the continuous deepening of urbanization in my country, the construction scale and traffic pressure of large and medium-sized cities are gradually increasing. As the throat of urban roads, signalized intersections are the key to efficient and stable urban traffic. In our country, the existing traffic signal control systems all use "flow detectors" to detect the aggregated traffic flow data within a period of time, so as to use the flow data to optimize the signal timing of signalized intersections. [0003] The existing means of using "flow detectors" to optimize signal timing have problems such as large detection errors, poor optimization results, high damage rate of "flow detectors" installed under the ground, and difficulty in later...

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Problems solved by technology

[0006] In order to solve the problems of relatively large signal timing detection error and high equipment damage rate in the prior art, the present invention proposes an intersection signal timing optimization method based on the vehicle queue length, which utilizes the vehicle queue length at the intersection to perform intersection port signal timing optimization

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