A traffic control method to ensure the smooth flow of viaducts

A technology of traffic control and viaduct, which is applied to control traffic signals and other directions, and can solve problems such as poor control effect, weak adaptability, and poor real-time performance

Inactive Publication Date: 2011-12-21
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0006] In order to overcome the disadvantages of poor real-time performance, poor control effect and weak adaptability of existing viaduct traffic control methods, the present invention provides a traffic control method with good real-time performance, good control effect and good adaptability to ensure the smooth flow of viaducts

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  • A traffic control method to ensure the smooth flow of viaducts
  • A traffic control method to ensure the smooth flow of viaducts
  • A traffic control method to ensure the smooth flow of viaducts

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] refer to figure 1 and figure 2 , a kind of traffic control method that guarantees viaduct unimpeded, described traffic control method comprises the following steps:

[0046] (1) Establish a real-time traffic status model for the main line of the viaduct:

[0047] Signal lights and traffic flow detectors are installed at each ramp entrance and ramp exit, and the signal lights and traffic flow detectors are all connected to the signal control server;

[0048] A viaduct is divided into N controllable units by ramps. N is a natural number. The main line section of the viaduct between two adjacent ramps is determined as a controllable unit. The length of each controllable unit section is Δ i, i=1, 2,..., N, the traffic flow running state of the road section is taken as the control object, the sampling period is T, after the continuous time is discretized, t is th...

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Abstract

A kind of traffic control method that guarantees viaduct is unimpeded, comprises the following steps: (1) establishes viaduct main line real-time traffic state model: install signal light, traffic flow detector at each ramp entrance and ramp exit, and described signal light and traffic flow detector are all Connect with the signal control server; a viaduct is divided into N controllable units by the ramp, N is a natural number, and the main line section of the viaduct between two adjacent ramps is determined as a controllable unit; (2) Based on traffic capacity-saturation (3) On-ramp control process: The cycle of the on-ramp regulation signal of the controllable unit i has two phases, that is, there are green lights and red lights for allowing vehicles to enter the viaduct and forbidding vehicles to enter the viaduct respectively Indicates that the base determines the green light time tg and the red light time in the time period [KT, (K+1)t]. The invention has good real-time performance, good control effect and good adaptability.

Description

technical field [0001] The invention relates to a traffic control method, in particular to a viaduct traffic control method. Background technique [0002] With the acceleration of urbanization and the increasing popularity of motor vehicles, people are also facing the confusion of traffic congestion while enjoying the convenience brought by motor vehicles. Therefore, under the existing road conditions, implementing effective traffic control methods, rationally using existing traffic facilities, and giving full play to their capabilities are one of the effective ways to solve traffic problems. [0003] After the development of the city, the traffic is congested, the buildings are dense, and the streets are difficult to widen. The intersections of the level interchanges cause vehicle congestion and congestion, which can no longer meet people's daily travel needs. Therefore, a multi-layer three-dimensional layout can be formed by building viaducts to improve Vehicle speed and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/07G08G1/08
Inventor 董红召马帅郭明飞陈宁
Owner ZHEJIANG UNIV OF TECH
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