Urban artery traffic dynamic green wave signal control system and method based on real-time traffic flow data

A technology of real-time traffic and urban traffic, applied in traffic control systems, road vehicle traffic control systems, traffic signal control, etc., can solve unconsidered problems

Active Publication Date: 2019-08-16
TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, this method fails to carry out real-time dynamic green wave coordination on the main line based on the actual traffic flow of the road. It c...

Method used

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  • Urban artery traffic dynamic green wave signal control system and method based on real-time traffic flow data
  • Urban artery traffic dynamic green wave signal control system and method based on real-time traffic flow data
  • Urban artery traffic dynamic green wave signal control system and method based on real-time traffic flow data

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specific example

[0074] Such as image 3 As shown, the following is a specific example, for example:

[0075] In a traffic trunk line I 0 , I 1 , I 2 Respectively, the adjacent upstream and downstream intersections, the distance S between the intersections 1 , S 2 They are 400m and 500m respectively, and the traveling speeds of road vehicles are respectively 40km / h and 50km / h. The signal timing parameters include: 0 The intersection is a key intersection, I 0 with I 1 The driving time of the section is 36s, I 1 with I 2 The driving time of the road section is 36s; in the collection of traffic flow data at key intersections, the hourly traffic flow in the coordinated direction of the entrance road is Q' 进1 = 450 veh / h. The benchmark scheme for key intersections is A 0 , see Table 1-Table 3 for details.

[0076] The upward adjustment step of dynamic small step adjustment is a=3s, the downward adjustment step is b=2s, and the minimum green time of coordination phase is g min = 20s, t...

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Abstract

The invention provides an urban artery traffic dynamic green wave signal control system based on real-time traffic flow data. The system comprises a flow data collection system, an annunciator controlsubsystem, a center optimal control subsystem, and a center scheduling control subsystem; the flow data collection system collects traffic flow data of each inlet lane coordination direction at an intersection in real time, and the annunciator control subsystem sends the traffic flow data to the center optimal control subsystem; the center optimal control subsystem dynamically generates an arterygreen wave coordination control scheme according to the traffic flow data transmitted in real time; and the center scheduling control subsystem sends the artery green wave coordination control schemeto the annunciator control subsystem to execute. The invention further provides an urban artery traffic dynamic green wave signal control method based on the real-time traffic flow data. The intelligent control level of the coordination artery can be greatly improved, thereby playing a positive role in the urban smooth traffic.

Description

technical field [0001] The invention relates to the field of traffic control, in particular to a system and method for controlling dynamic green wave signals of urban traffic main lines based on real-time traffic flow data. Background technique [0002] In the existing urban traffic signal control system, the theory and practice of coordinated control for traffic arteries are relatively mature. It is mainly divided into a coordinated control algorithm with the goal of maximizing bandwidth and a coordinated control algorithm with the goal of minimizing delay. It has been widely used in control. However, at present, only the timing control of the coordinated scheme of traffic arteries has been achieved, which can be roughly divided into several fixed-time coordinated timing schemes such as morning peak, flat peak, evening peak, and night. However, the traffic on the actual roads increases sharply during peak hours, and the flow of trunk lines suddenly increases during flat pea...

Claims

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Application Information

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IPC IPC(8): G08G1/08G08G1/081
CPCG08G1/08G08G1/081
Inventor 树爱兵徐新东徐棱张宾刘成生蔡玉宝
Owner TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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