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Traffic event influence analysis method based on traffic flow wave theory

A traffic event and impact analysis technology, which is applied to road vehicle traffic control systems, traffic flow detection, traffic control systems, etc., can solve the problems of unsatisfactory relative response ability to congestion, stoppages, etc., to improve effective passing capacity, Effects of reducing parking times and improving air quality

Inactive Publication Date: 2012-07-25
TSINGHUA UNIV
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Problems solved by technology

[0003] At present, the research on traffic congestion and traffic impact stays in the macro-quantitative or simply by calculating the speed of the road to determine whether the road section is congested, but these methods are delayed in time, and the unpredictability of traffic congestion, as well as the The relative responsiveness of the

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  • Traffic event influence analysis method based on traffic flow wave theory
  • Traffic event influence analysis method based on traffic flow wave theory
  • Traffic event influence analysis method based on traffic flow wave theory

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Embodiment Construction

[0036] 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.

[0037] Aiming at the existing problems of expressways and urban expressways, most of the traffic accidents in expressways and urban expressways are caused by the phenomenon of traffic waves. The present invention studies the influence of traffic waves on traffic events, the propagation and dissipation process of traffic waves, and can By calculating the propagation speed of the traffic wave, the relationship between the length of the traffic congestion queue and the occurrence time of the traffic congestion can be obtained, and the radiation range of the traffic congestion can be obtained, and the queue waiting time of the congested section can be obtained through the dissipation speed of the traffic wave. By studying ...

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Abstract

The invention discloses a traffic event influence analysis method based on a traffic flow wave theory, falling in the technical field of traffic control. According to the invention, a flow-density-speed diagram is drawn firstly according to a specified jammed road section; the speed of a traffic wave from the upstream to the middle part of the jammed road section is then calculated to obtain the speed of the jammed traffic wave and the vehicle queue length from the upstream to the middle part; and the speed of the traffic wave from the middle part to the downstream of the jammed road section is finally calculated, to obtain the speed of dissipating the traffic wave from the middle part to the downstream of the jammed road section, so as to work out the vehicle queue waiting time of the jammed road section. The inventive method can improve the actual effective carrying capacity of highway, reduce rear-end crash accidents, and maintain traffic flow stability.

Description

technical field [0001] The invention belongs to the technical field of traffic control, and in particular relates to a traffic event impact analysis method based on the traffic flow wave theory. Background technique [0002] With the rapid development of expressway in our country, the mileage of expressway is increasing continuously, and expressway plays a more and more important role in medium and long-distance transportation. However, at the same time, the traffic accidents in the expressway also brought huge economic and property losses. However, most of the traffic accidents in expressways or urban expressways are caused by the phenomenon of traffic waves, so it is of great practical and theoretical significance to study the impact analysis method of traffic events based on the theory of traffic waves. [0003] At present, the research on traffic congestion and traffic impact stays in macro-quantitative or simply by calculating vehicle speed to determine whether the roa...

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Application Information

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IPC IPC(8): G08G1/00G08G1/01
Inventor 吴建平袁月明周杨张璇
Owner TSINGHUA UNIV
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