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City road intersection signal coordination control optimization method

A technology for coordinating control and intersection signals, used in the control of directions such as traffic signals

Inactive Publication Date: 2015-03-25
SUZHOU YILU TRAFFIC TECH
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Problems solved by technology

[0006] Under the condition of oversaturation, the queuing overflow technology at the intersection is an important content of the coordinated control of traffic signals, but there are many deficiencies in the queuing overflow control technology under the condition of oversaturation in various systems that have been applied so far

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  • City road intersection signal coordination control optimization method
  • City road intersection signal coordination control optimization method
  • City road intersection signal coordination control optimization method

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Embodiment Construction

[0031] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0032] The optimization method of urban road crossing signal coordinated control of the present invention, on the basis of crossing single-point signal control, the signal phase difference of upstream and downstream crossings is used as an important parameter to carry out the queuing overflow control of crossings, and the symbols are defined as follows:

[0033] (1) Intersection distance L: the distance between two adjacent intersections, the distance from the stop line at the upstream intersection to the stop line at the downstream intersection is used for calculation.

[0034] (2) Queue length q: the queue length of the queued vehicles extending from the stop line to the upstream when the green light at the downstream intersection starts.

[0...

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Abstract

The invention relates to a city road intersection signal coordination control optimization method. Compared with the prior art, based on analysis of the upstream vehicle flow state and the downstream vehicle flow state of adjacent intersections, the state value of a signal control intersection is determined with the fluctuation theory for reference by comparing the amplitude of stopping waves of the upstream intersection and the amplitude of starting waves of the downstream intersection and analyzing the vehicle queuing condition in the artery direction of the upstream intersection, reliable intervals for signal coordination control under different states can be obtained, queuing overflow of oversaturated intersections can be controlled within a certain range, the probability that the oversaturated intersections are deadlocked is greatly reduced, meanwhile, queuing overflow becomes beneficial self-control of the road intersections under the oversaturated condition, and the purpose of the method is achieved.

Description

technical field [0001] The invention relates to an optimization method for signal coordination control, in particular to an optimization method for signal coordination control under the oversaturated condition of urban road intersections in the field of intelligent transportation, which is used for signal coordination control of road intersections. Background technique [0002] Urban road intersection signal coordination control system is playing an increasingly important role in urban traffic, and urban traffic managers are trying to alleviate urban traffic problems with the help of urban traffic signal coordination control system. Due to the rapid growth of motor vehicles, many cities have experienced saturation or even oversaturation of road traffic. Under the condition of oversaturation, the traffic capacity between intersections does not match, which will cause queuing aggregation and easy queuing overflow. [0003] The urban road intersection signal coordination contro...

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Application Information

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IPC IPC(8): G08G1/08
CPCG08G1/08
Inventor 吴志周
Owner SUZHOU YILU TRAFFIC TECH
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