Congestion early warning method for expressway bottle-neck road segment

A technology for bottleneck roads and highways, which is applied in the field of early warning of bottleneck road congestion on expressways. It can solve problems such as the inability to obtain road traffic data, fixed installation positions, and narrow detection ranges, so as to avoid the use of physical detection devices, save costs, and The effect of improving operating efficiency
CN107993438AInactive Publication Date: 2018-05-04SHANGHAI YUNDI INFORMATION TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI YUNDI INFORMATION TECH
Publication Date
2018-05-04
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a congestion early warning method for an expressway bottle-neck road segment. The congestion early warning method comprises the following steps that data of all toll stations,flow data of vehicles which enter and leave from the stations and mobile phone signaling data of all users who enter the stations in a selected area are collected; OD matrix models of the toll stations and the road resistance coefficients of all paths in all OD pairs are established, and the optimal paths of all the OD pairs are determined; according to the collected mobile phone signaling data, the vehicle speed is evaluated, and the required time when the vehicles run to the bottle-neck road segment is calculated; the flow of the vehicles which reach the bottle-neck road segment in a specific time period is counted, and if the flow of the vehicles exceeds a traffic flow threshold valve of the bottle-neck road segment, congestion early warning is conducted. The congestion early warning method for the expressway bottle-neck road segment has the advantages that the mobile phone signaling data is used for evaluating the vehicle speed and the flow data of entrances of the toll stations, the flow of the vehicles which pass through the bottle-neck road segment in a certain time range is predicted, early warning can be conducted ahead of schedule, and the running efficiency of an expressway can be improved; application of physical detection devices such as ground sensing coils can also be avoided to a certain extent, and the cost is saved.
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Description

technical field

[0001] The invention belongs to the technical field of traffic congestion evaluation, and in particular relates to a method for early warning of bottleneck section congestion on expressways. Background technique

[0002] In the past ten years, my country's trunk road infrastructure has achieved rapid development, road network operation management and service levels have been effectively improved, and expressway network operation and service work has made major breakthroughs.

[0003] The evaluation of expressway operation analysis is conducive to strengthening the operation monitoring and scientific management of the national trunk road network, and can improve the emergency response ability and public service ability of highway emergencies. At the same time, with the rapid economic growth and the expansion of urban scale, the contradiction between the expressway network capacity and traffic demand has become increasingly prominent, and the resulting long-ter...

Claims

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