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Road network traffic peak grouping identification method

A road network and identification method technology, which is applied in the field of using traffic operation data (such as speed) to identify groups of traffic jams in the road network, can solve the problems of weakening the efficiency of traffic management and difficult to reflect the traffic operation, and achieves strong applicability. Effect

Active Publication Date: 2014-06-25
ZHEJIANG UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

At present, the identification of congestion groups mainly relies on empirical methods, which is difficult to reflect the real traffic operation, thus weakening the benefits of traffic management

Method used

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  • Road network traffic peak grouping identification method
  • Road network traffic peak grouping identification method
  • Road network traffic peak grouping identification method

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Embodiment Construction

[0014] The present invention will be further described in detail below.

[0015] Define two connecting lines i and j; ij =1, otherwise δ ij =0. The velocity data of line i can be expressed as a time series X i =(x i1 ,x i2 ...), the present invention determines that the steps of peak congestion groups are:

[0016] 1) For any two connected lines i and j (that is, δ ij =1), use the following formula to calculate the time series X i and x j The similarity s(X i ,X j ):

[0017] s ( X i , X j ) = Σ k x ik x jk Σ k ( x ...

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Abstract

The invention discloses a road network traffic peak grouping identification method. Firstly, average velocity data of a road segment within a certain time interval in a road network are utilized, and the traffic circulation similarity between adjacent connecting lines is calculated; secondly, a congestion seed connecting line is selected, and adjacent congestion connecting lines are searched repeatedly with the congestion seed connecting line being the center; finally, a congestion connecting line set with the congestion seed connecting line being the core and a congestion start-stop time interval are determined, namely peak grouping. The road network traffic peak grouping identification method can provide a basis for traffic management decisions.

Description

technical field [0001] The invention relates to a method for identifying groups of traffic peaks in urban traffic management, in particular to a method for identifying groups of traffic jams in a road network by using traffic operation data (such as speed). Background technique [0002] Traffic congestion in urban road networks often presents the characteristics of clusters, that is, some links or intersections are congested at a certain time period at the same time. Generally speaking, due to different reasons, such as morning and evening rush hour, traffic accidents, school going to and from school, large-scale events, etc., there will be different congestion groups on the road network. Identifying these congestion groups will have a great impact on the formulation of daily traffic management strategies and the deployment of traffic management resources. Is of great significance. At present, the identification of congestion groups mainly relies on empirical methods, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
Inventor 祁宏生王殿海许骏叶盈韦薇郑正非蔡正义
Owner ZHEJIANG UNIV