Intelligent identification method of road traffic status

A technology for traffic status and intelligent identification, applied in traffic flow detection and other directions, can solve the problems of lack of integrity, poor applicability, and low accuracy.

Inactive Publication Date: 2011-01-19
TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to seek a kind of intelligent identification method applicable to the traffic state of the road section, and solve the problems of low accuracy, poor applicability, and lack of integrity in the identification of the current road section traffic state

Method used

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  • Intelligent identification method of road traffic status
  • Intelligent identification method of road traffic status

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Embodiment Construction

[0077] The method scheme of the present invention is as follows:

[0078] 1. Define the traffic status of road sections as smooth, normal, congested, jammed, and severely jammed, and use fuzzy reasoning to regularly identify traffic status.

[0079] According to the traffic flow ratio, traffic flow occupancy rate, and traffic state rules, the mode combination is carried out to form a fuzzy relationship, and then the measured data of the traffic flow ratio and occupancy rate are used as input to calculate the fuzzy set, and the fuzzy set of output results is obtained according to the fuzzy relationship, and finally The current traffic status is obtained by fuzzy judgment. The traffic flow ratio refers to the ratio of the actual number of vehicles passing through a detection section or detection area of ​​a road section per unit time to the maximum number of vehicles allowed to pass. The ratio of the total time of statistics.

[0080] 2. The domain of fuzzy sets

[0081] Take...

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Abstract

The invention relates to an intelligent identification method of a road traffic status. In the method, road section traffic statuses are defined into five grades of smoothness, normality, crowdness, blockage and severe blockage, and traffic flow ratios and occupation ratios are both defined into five grades of very small, small, medium, large and very large; a fuzzy reasoning method is used for intelligently identifying the road section traffic statuses; mode combination is carried out to form a fuzzy relation according to the traffic flow ratio, the traffic occupation ratio and a traffic status rule, and then actual measurement data of the traffic flow ratio and the occupation ratio is used as an input to work out a fuzzy set; and finally, the traffic status at that time is obtained by adopting fuzzy decision. The invention has the advantages that the traffic status is synergetically measured by the two main parameters: the traffic flow ratio and the occupation ratio, thus the accuracy is high; only one traffic flow detector needs to be arranged for measuring the traffic flow and the occupation ratio, thus the site construction cost is lower; and the traffic statuses are expanded to five grades, thus the integrity and the systematicness are high.

Description

technical field [0001] The invention relates to an intelligent traffic state identification method applied to road sections, which is used for traffic operation state identification of road sections. Background technique [0002] my country's public safety industry standard GA115-1995 "Road Traffic Congestion Degree and Evaluation Method" defines the traffic status of road sections: for urban road sections, vehicles on the roadway are blocked if the queue length exceeds 1000 meters, and the queue length exceeds 1500 meters. For road sections, vehicles blocked on the roadway with a queue length exceeding 2,000 meters are considered to be blocked, and vehicles with a queue length of more than 3,000 meters are considered to be severely blocked. [0003] To sum up, the traffic status is divided into two grades of congestion and severe congestion, all of which are measured by the length of the queue. This method is intuitive and easy to distinguish, but it also has the following ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01
Inventor 袁建华张雷元郑煜
Owner TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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