Multiple key crossing optimizing technique for traffic signal controlling system

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

Inactive Publication Date: 2008-01-23
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

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Embodiment Construction

[0018] The black ● in Figure 1 indicates a key intersection; the colorless ○ indicates an ordinary intersection; the black ● in Figure 2 indicates a key intersection; the gray Indicates a quasi-critical intersection; a colorless ○ indicates an 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 flow is higher than a certain set value x 2 When it is a heavy traffic state, the traffic flow 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 determine the public cycle of the ...

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Abstract

The invention relates to a traffic signal control system, in particular to a multiple key intersection optimization technology applied in the traffic signal control system for a regional road network. According to the technical proposal of the invention, the optimization technology comprises: a. divide the intersection traffic into three status comprising light traffic, medium traffic and heavy traffic; b. determine a public cycle of a sub-area according to a key intersection group formed by a plurality of intersections with high traffic saturation degree; in calculating the public cycle under coordinated control in the sub-area, conduct automatic sorting of the saturation degree of all the intersections under control in the sub-area in each time section; select a plurality of intersections with top ranking into the key intersection group; c. select sample volume and comprehensively consider the representativeness of sample and calculate the workload. Therefore, the invention is able to resolve the problem of poor adaptability and low efficiency in the single key intersection optimization technology of existing 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 Applications(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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