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Expressway VMS arrangement optimization method based on road network grade division

A technology for expressway and layout optimization, which is applied in the traffic control system of road vehicles, the arrangement of variable traffic instructions, and traffic flow detection, etc., to achieve the effect that the calculation is in line with reality and the layout of VMS is reasonable

Active Publication Date: 2017-08-22
TONGJI UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

For the research on the layout of VMS, there is no method that is more suitable for engineering practice in my country.

Method used

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  • Expressway VMS arrangement optimization method based on road network grade division
  • Expressway VMS arrangement optimization method based on road network grade division
  • Expressway VMS arrangement optimization method based on road network grade division

Examples

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Embodiment

[0042] Such as figure 1 As shown, a highway VMS layout optimization method based on road network classification, the method includes the following steps:

[0043] (1) Classify the road network to be laid out, including national-level road network and inter-provincial road network. The road network uses toll stations as network nodes to connect various expressways in the province;

[0044] (2) Analyze the national-level road network and the inter-provincial road network separately, and use the road between network nodes in each road network as a road section to obtain the traffic data of each road section and the criticality of the road section, and design the traffic data in this process (OD data) processing, manage OD data in different levels of road networks: national OD management, inter-provincial OD management, line OD matrix extraction. Such as figure 2 Shown is the flow chart of specific OD data processing. The inter-provincial OD matrix is ​​obtained from the data ...

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Abstract

The invention relates to an expressway VMS arrangement optimization method based on road network grade division. The method comprises following steps of (1) carrying out grade division on to-be-arranged road networks including a national level road network and an interprovincial level road network, wherein the national level road network uses prefecture-level cities as network nodes and the interprovincial level road network uses toll stations as network nodes; (2) analyzing the national level road network and the interprovincial level road network and using roads between the network nodes in each road network as road sections so as to acquire flow data of each road section and road section critical degrees; (3) according to the flow data of each road section and the corresponding road section critical degrees in each road network, establishing VMS arrangement models; and (4) solving the VMS arrangement models of the road networks respectively to obtain VMS arrangement conditions in the corresponding road networks. Compared with the prior art, the method is highly operable, and has profound actual application prospects and an important guiding meaning for scientific VMS arrangement.

Description

technical field [0001] The invention relates to an expressway VMS layout optimization method, in particular to an expressway VMS layout optimization method based on road network grade division. Background technique [0002] Expressway, as a fast transportation corridor between cities, is of great significance to the development of national economy. However, with the continuous growth of car ownership in our country this year, expressway congestion occurs from time to time, and variable message signs (VMS-variable message signs) are used more and more widely in road network traffic command and congestion relief. VMS provides traffic information for drivers on the way, such as downstream road accidents, congestion information, estimated travel time, etc., to effectively help drivers choose routes, thereby improving the efficiency of road facilities. [0003] The role of VMS depends on the reasonable layout of VMS in the road network. However, the investigation found that the ...

Claims

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Application Information

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IPC IPC(8): G08G1/01G08G1/09
CPCG08G1/0125G08G1/0137G08G1/09
Inventor 常云涛苏斌郑立勇王奕彤李立
Owner TONGJI UNIV
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