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Method for searching critical road sections of traffic networks on basis of redundancy of road section sub-networks

A traffic network and sub-network technology, applied in the traffic control system of road vehicles, traffic control system, special data processing applications, etc., can solve the problems of high search accuracy and search efficiency, operability, etc., to improve search efficiency, The method is simple and the effect of high search accuracy rate

Inactive Publication Date: 2014-12-17
TONGJI UNIV
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Problems solved by technology

[0007] In summary, the existing search methods for key sections of the traffic network are difficult to simultaneously achieve high search accuracy and search efficiency as well as strong operability

Method used

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  • Method for searching critical road sections of traffic networks on basis of redundancy of road section sub-networks
  • Method for searching critical road sections of traffic networks on basis of redundancy of road section sub-networks
  • Method for searching critical road sections of traffic networks on basis of redundancy of road section sub-networks

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Embodiment Construction

[0035] The core idea of ​​the present invention is to provide a traffic network key road section search method based on the road section subnetwork redundancy, by introducing the road section subnetwork redundancy index as the selection index of candidate key road sections, to overcome the existing traffic network key road section The search method is insufficient in search efficiency, search accuracy and operability.

[0036] figure 1 Shown is the search process for key road segments in the traffic network based on the redundancy of road sub-networks:

[0037] First of all, the urban road traffic network includes expressways (elevated roads), main roads, secondary arterial roads and traffic branch roads, but in order to simplify the network, some types of roads can be selected according to actual research needs, and the traffic network topology can be established with the original method of complex network theory Model G=(V,E,Ω), where V represents the non-empty node set of ...

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Abstract

The invention discloses a 'method for searching critical road sections of traffic networks on the basis of the redundancy of road section sub-networks'. Road section redundancy indexes which reflect topological characteristics of the road section sub-networks are selected to be used as selection indexes of candidate critical road sections by the aid of the method. The method includes building a sub-network of each directional road section, simultaneously counting the numbers of nodes of the sub-networks and the numbers of the directional road sections and computing the corresponding redundancy indexes; preliminarily selecting the candidate critical road sections according to a principle that the road sections with the small redundancy indexes are optimally selected, computing an influence degree of each candidate critical road section on the traffic networks and selecting the road sections with the maximum influence degrees as the critical road sections. The method has the advantages that the searched critical road sections of the traffic networks are high in search accuracy, search efficiency and operability, and the problem of difficulty in determining selection indexes of candidate road sections with good search effects and high operability can be solved.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, and mainly relates to the identification and search of key road sections in traffic networks, more specifically, a search method for key road sections with high search efficiency under certain search accuracy conditions. Background technique [0002] The transportation network is an important part of the urban transportation system. It connects the city in space and is the basis for the normal operation of various functions of the city. The key road section of the transportation network refers to the road section whose damage, degradation or failure will have a significant negative impact on the entire transportation network within a certain period of time. Accurately and quickly identifying key road sections of the traffic network is of great significance at the level of strategic planning, tactical planning, and traffic operation management and control. Accurately and quickly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/00G06F17/30
Inventor 俞春辉云美萍杨晓光
Owner TONGJI UNIV
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