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Multiple key crossing optimizing technique for traffic signal controlling system

A key intersection and control system technology, applied in the field of adaptive and coordinated traffic signal control, can solve problems such as poor adaptability and low efficiency, and achieve the effects of strong applicability, flexible control, and improved coordinated control efficiency

Inactive Publication Date: 2009-09-23
TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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Problems solved by technology

[0004] The purpose of the present invention is to seek a traffic signal control system multi-key intersection optimization technology suitable for self-adaptive coordinated control of sub-areas with unbalanced road traffic flow distribution, so as to solve the problem of existing single-key intersection optimization technology in the traffic signal control system. Poor adaptability and low efficiency

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  • Multiple key crossing optimizing technique for traffic signal controlling system
  • Multiple key crossing optimizing technique for traffic signal controlling system
  • Multiple key crossing optimizing technique for traffic signal controlling system

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Embodiment Construction

[0018] figure 1 The middle black ● indicates a key intersection; the colorless ○ indicates an ordinary intersection; figure 2 The black ● indicates the critical intersection; the gray ● indicates the quasi-critical intersection; the colorless ○ indicates the ordinary intersection.

[0019] The basic idea of ​​the traffic signal control system multi-key intersection optimization technology of the present invention is as follows: one is to divide the traffic at the intersection into three states: light traffic, medium traffic and heavy traffic; wherein the traffic saturation is lower than a certain set value x 1 It is a light traffic state, and the traffic saturation is higher than a certain set value x 2 It is a heavy traffic state, and the traffic saturation is higher than a certain set value x 1 , lower than another set value x 2 It is a medium traffic state. Second, the key intersection group is composed of n intersections with high traffic saturation to jointly determi...

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Abstract

The invention relates to a traffic signal control system, in particular to a multi-key intersection optimization technology for a traffic signal control system applied to a regional road network. According to the technical solution provided by the present invention, the optimization technique includes: a, dividing the traffic at the intersection into three states: light traffic, medium traffic and heavy traffic; b, forming a key intersection by n intersections with higher traffic saturation Group to jointly determine the public period of the sub-area; when calculating the public period of the coordinated control of the sub-area, the traffic saturation of all controlled intersections in the sub-area must be automatically sorted every time a period passes, and the top n intersections shall be ranked The intersection is selected as a key intersection group; c. Select the sample size, taking into account the representativeness of the sample and the calculation workload. The invention can solve the problems of poor adaptability and low efficiency existing in the single key intersection optimization technology of the current traffic signal control system.

Description

technical field [0001] The invention relates to a traffic signal control system, in particular to a multi-key intersection optimization technology of a traffic signal control system applied to a regional road network, which is suitable for self-adaptive and coordinated traffic signal control of the road network. Background technique [0002] The traffic signal control system is used to control the traffic signals of the road network. It is an adaptive coordinated control system that can automatically change or adjust the traffic light timing scheme according to the real-time traffic information provided by the vehicle detector, and implement real-time random control of the road network. At present, the typical representatives of the traffic signal control system are the British SCOOT system (green signal ratio, signal cycle and green light start time difference optimization technology) and the Australian SCATS system (Sydney Adaptive Coordinated Control System), both of which...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/081G06Q10/00G06Q50/00
Inventor 袁建华赵永进罗俊仪郑煜
Owner TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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