Urban area road network operating state evaluation method considering critical degree of road section

A technology of running status and evaluation method, which is applied to the traffic control system of road vehicles, instruments, character and pattern recognition, etc., can solve the problems of poor real-time performance, strong subjectivity, and no consideration of road characteristics, etc., and achieve simple calculation process and application wide scene effect

Inactive Publication Date: 2017-10-13
BEIHANG UNIV
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[0007] The present invention is proposed based on the above-mentioned requirements of the prior art. The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art, such as strong subje

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  • Urban area road network operating state evaluation method considering critical degree of road section
  • Urban area road network operating state evaluation method considering critical degree of road section
  • Urban area road network operating state evaluation method considering critical degree of road section

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Embodiment Construction

[0034] The specific implementation of this patent will be described in detail below in conjunction with the accompanying drawings. It should be pointed out that this specific implementation is only an example of the preferred technical solution of this patent, and should not be understood as limiting the scope of protection of this patent.

[0035] This specific embodiment provides a method for evaluating the operating state of urban regional road networks considering the criticality of road sections, such as figure 1 As shown, the method includes the following steps:

[0036] Step 1: Obtain and preprocess the GPS data of the floating vehicle and the data of the fixed detector.

[0037] In this step, the GPS data of the floating car can be obtained through raw data collected by a GPS module provided on the floating car. Fixed detector data can be obtained through fixed detectors set on road sections.

[0038] Among them, the original GPS data of the floating car and the orig...

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Abstract

The invention discloses an urban area road network operating state evaluation method considering the critical degree of a road section. The method comprises the following steps that: step 1, floating vehicle GPS data and fixed detector data are obtained and preprocessed; step 2, urban road network important road section identification is performed; step 3, urban road network weak road section identification is performed; step 4, urban road network key road section identification is performed, and critical degree vectors are divided into different levels; and step 5, urban road network operating state index construction is performed. According to the method of the invention, a traffic flow rate which measures the critical degree of the road section and an average velocity variation coefficient which measures the weak degree of the road section are both considered, the critical degrees of the road section are clustered and divided, and therefore, the evaluation of the congestion of a road network is more realistic and more sensitive.

Description

technical field [0001] The present invention relates to the field of operating state evaluation in urban road traffic, in particular to a method of extracting information from urban regional road network traffic index parameters, and using a clustering method to divide the criticality of road sections, so as to optimize the operation of regional road networks. The way to evaluate the status. Background technique [0002] With the development of urbanization and the acceleration of motorization, the number of motor vehicles in my country has increased rapidly, and the problem of congestion in urban road traffic networks has become increasingly serious. By evaluating the state of urban road network congestion, it is helpful to grasp the degree of traffic congestion, the scope of influence of congestion and the trend of development and spread in general, and provide a theoretical basis for traffic management departments to analyze and study congestion phenomena; it is also help...

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Application Information

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IPC IPC(8): G08G1/01G06K9/62
CPCG08G1/0112G08G1/0133G06F18/2321
Inventor 王云鹏杨刚于海洋任毅龙吴志海杨帅李屹陈鹏
Owner BEIHANG UNIV
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