Establishing method and working method for traffic overflowing coordinate control optimization model

A technology of coordinated control and optimization model, applied in traffic control systems, traffic control systems of road vehicles, instruments, etc., can solve the problems of prone to traffic overflow and increase of queued vehicles at upstream intersections.

CN103927892AInactive Publication Date: 2014-07-16SHANDONG BIA TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-07-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an establishing method and a working method for a traffic overflowing coordinate control optimization model. The establishing method includes the following steps that a queuing length limiting condition model is established to obtain a phase different range which can prevent traffic overflowing from occurring; a phase different optimizing method is established based on the minimum delay to obtain a function relation between phase difference and delay time; according to different restraints, on the phase difference, of the queuing length limiting condition model and the minimum delay phase difference optimization method, the two restraints are combined to take the minimum value in an intersection, so that the traffic overflowing coordinate control optimization model which not only can prevent overflowing from occurring, but also can minimize vehicle delay time is obtained. The establishing method and working method have the advantage that the traffic overflowing phenomenon is effectively prevented from occurring at the morning and evening peak periods of city primary roads.
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Description

technical field

[0001] The invention relates to a method for establishing a traffic overflow coordination control optimization model and a working method thereof. Background technique

[0002] The rapid economic development has promoted the pace of urban modernization, making people's travel methods more diverse and faster. Private cars began to appear in my country in the 1980s. By 2003, the number of cars had exceeded 10 million, and it took only three years to break through 20 million. At present, the number of cars in my country has exceeded 100 million. This huge number does not simply mean that people's travel is more convenient, but many problems such as traffic congestion, frequent accidents, environmental pollution, increased noise, etc. have resulted in a serious decline in people's quality of life.

[0003] As the skeleton of the urban road network and the main artery of urban traffic, the urban trunk road bears huge traffic pressure. The traffic flow is large, t...

Examples

Embodiment Construction

[0087] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.

[0088] 1. Improved traffic wave model

[0089] The traditional traffic wave model is suitable for the case of low traffic flow density. For the special oversaturated form of "traffic overflow", the Greenberg speed-density function suitable for congested traffic flow is used to re-deduce the traffic wave model. The derivation formula is:

[0090] 1) Greenberg traffic wave model

[0091] u w = [ k 2 u m ln ( k j . k 2 ) ] - [ ...