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Optimal method of signal control at level intersections based on vehicle queuing length

A technology of intersection and queuing length, which is applied in the field of signal control at plane intersections based on vehicle queuing length, can solve the problem that the traffic signal control optimization method cannot meet the actual signal control optimization requirements of the intersection, so as to avoid the difficulty in obtaining traffic , Reduce traffic troubles, improve convenience and accuracy

Inactive Publication Date: 2017-11-28
WUXI HUATONG INTELLIGENT TRAFFIC TECHN DEV
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Problems solved by technology

[0005] In view of the above problems, the present invention provides an optimization method based on the vehicle queuing length for level crossing signal control, which can solve the problem that only a single traffic signal control optimization method cannot meet the actual signal control optimization requirements of the intersection at present.

Method used

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  • Optimal method of signal control at level intersections based on vehicle queuing length
  • Optimal method of signal control at level intersections based on vehicle queuing length
  • Optimal method of signal control at level intersections based on vehicle queuing length

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Embodiment Construction

[0032] Take four-phase signal control intersection control as an example below in conjunction with accompanying drawing, specifically describe the realization process of inventive method:

[0033] First, at the four-phase signal control intersection, install high-definition video vehicle detectors, signal machines and signal lights for recording the number of vehicles in each lane and the length of vehicle queuing. The high-definition video vehicle detectors are arranged above the parking lines of each entrance;

[0034] (1) Obtain the initial queue length of each flow direction at the intersection at the beginning of its release phase by deploying high-definition video vehicle detectors above the parking lines of each entrance road at the intersection and the remaining queue length at the end of the release phase Wherein, i is the signal phase number, i=1, 2, 3, 4, j is the direction of the release flow in this phase to the entrance channel, j=E, W, S, N.

[0035] (2) Calc...

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Abstract

The invention provides an optimization method for the signal control of a plane intersection based on the queuing length of vehicles, which can solve the problem that only a single traffic signal control optimization method cannot meet the actual signal control optimization requirements of the intersection at present. Its following steps, (1) obtain the initial queuing length and the remaining queuing length at the end of the release phase of each flow direction at the intersection when its release phase begins and the end of the release phase. Wherein, i is the signal phase sequence number, i=1,2,3,4, j is the direction of the release flow to the entrance in this phase, j=E, W, S, N; (2) Calculate the acceptable green signal ratio of each flow direction at the intersection (3) Determine whether the intersection needs to be superimposed phase setting, if necessary The ground superposition phase setting determines the superposition phase duration; (4) optimizes the intersection signal timing scheme according to the judgment result of the step (3).

Description

technical field [0001] The invention relates to the technical field of urban road traffic control, in particular to the field of road intersection signal control, in particular to an optimization method for plane intersection signal control based on vehicle queuing length. Background technique [0002] With the rapid development of my country's economy, the number of urban motor vehicles is increasing rapidly, and the frequency of traffic congestion is increasing, which has a negative impact on the daily life of urban residents. Optimizing the signal control scheme of existing level intersections is a low-cost, high-efficiency method of congestion control, which has received more and more attention and investment. [0003] At present, the optimization methods of traffic signal control include the phase sequence optimization method and the signal timing optimization method, among which the phase sequence optimization method is to improve the operation efficiency of the inters...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/08
Inventor 华璟怡顾金刚代磊磊卢健付强祖永昶徐棱
Owner WUXI HUATONG INTELLIGENT TRAFFIC TECHN DEV
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