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Urban road traffic multiobjective optimization control method

A multi-objective optimization and road traffic technology, applied in the field of multi-objective optimal control of urban road traffic, can solve problems such as unbalanced queuing lengths and lack of green light time

Active Publication Date: 2013-07-03
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 2. The queuing length of each phase of the intersection is very unbalanced, the entrance direction with a small queuing length is allocated too much green light time, while the entrance direction with a long queuing length lacks effective green light time

Method used

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  • Urban road traffic multiobjective optimization control method
  • Urban road traffic multiobjective optimization control method
  • Urban road traffic multiobjective optimization control method

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Embodiment Construction

[0045] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0046] figure 1 It is a flowchart of a multi-objective optimal control method for urban road traffic. figure 1 In, the implementation process of the present invention is:

[0047] Step 1: Establish a multi-objective optimal control model.

[0048] The multi-objective optimal control model of the present invention is:

[0049] Obj : Z = k 1 CT + k 2 JH = k 1 Σ i = 1 M α i T ‾ i + ...

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Abstract

The invention belongs to the technical field of urban road traffic control, particularly to an urban road traffic multiobjective optimization control method. The method comprises the following technical schemes of: establishing a multiobjective optimization control model, optimizing the cycle and the split green ratio by adopting a cyclic discrete variable positive and negative stepwise bidirectional adjustment method, adding constraint conditions in the multiobjective optimization control model and solving the multiobjective optimization control model by adopting a genetic algorithm. The invention realizes traffic control, not only satisfies requirement for traffic stream rapid evacuation, but also meets requirement for traffic stream equilibrium distribution, and improves the service level of road intersections.

Description

technical field [0001] The invention belongs to the technical field of urban road traffic control, in particular to a multi-objective optimization control method for urban road traffic. Background technique [0002] With the development of cities and the increase of vehicles, implementing effective traffic control to ensure smooth traffic has become an important issue faced by traffic management departments. Traffic flow control plays an important role in improving the traffic capacity of urban roads and alleviating urban traffic congestion. Its important content is to adopt effective control measures for the smooth, orderly and safe traffic flow of urban roads, and to maximize the use of road facilities. efficiency. [0003] With the continuous increase of traffic demand and the requirements for smoothness and balance, traditional traffic control objectives such as intersection delay, queuing length and parking rate can no longer meet the needs of urban road traffic contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/07G06N3/12
Inventor 贾睿妍邓文董宏辉秦勇徐东伟李海健史元超贾利民
Owner BEIJING JIAOTONG UNIV
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