Method for identifying traffic status of express way based on information fusion

A technology of traffic status and expressways, applied in the direction of traffic flow detection, etc., can solve the problems of ineffectiveness of basic data and low utilization rate, achieve reliable decision support and improve management efficiency

Inactive Publication Date: 2010-05-12
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0002] In recent years, my country has carried out a lot of research work in the field of intelligent transportation systems. The traffic manag

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  • Method for identifying traffic status of express way based on information fusion
  • Method for identifying traffic status of express way based on information fusion
  • Method for identifying traffic status of express way based on information fusion

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[0033] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0034] The highway traffic state identification method based on information fusion proposed by the present invention applies traffic information fusion technology, fully utilizes highway traffic monitoring information, identifies and estimates traffic conditions, and provides decision support for traffic control, traffic command, and traffic planning .This method inherits the calculation idea of ​​Support Vector Machines (SVM), and at the same time analyzes the limitations of applying the traditional SVM method to solve the traffic state identification of expressways. At , an improved scheme is proposed to obtain a decision tree-support vector machine (DTM-SVM) model. figure 1 It is a schematic diagram of the highway ...

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Abstract

The invention discloses a method for identifying the traffic status of an express way based on information fusion, belonging to the technical field of traffic information fusion. The method comprises the steps: selecting traffic parameters, and establishing an evaluation index system of status identification; according to decision tree algorithm, establishing a binary tree structure of the traffic status identification; determining the fusion layer K of the binary tree structure, wherein K is more than or equal to 2 and i is equal to 1; according to sample format requirements of an ith layer, preprocessing data of the ith layer, and determining an input sample of the ith layer; utilizing a machine learning method of a support vector machine to train the input sample of the ith layer, thus obtaining the support vector machine; carrying out data fusion on the support vector machine to obtain a fusion result, and judging the support vector machine in next level fusion according to the fusion result; and if i is equal to i plus 1, judging whether that i is more than or equal to K is set, if so, returning the step 4, and executing the data fusion at next layer, and if not, ending the process. The method inherits the advantages of the information fusion method of the traditional support vector machine, and solves the problem of low accuracy of traffic status identification of the express way.

Description

technical field [0001] The invention belongs to the technical field of traffic information fusion, in particular to an information fusion-based highway traffic state identification method. Background technique [0002] In recent years, my country has carried out a lot of research work in the field of intelligent transportation systems. The traffic management system has obtained a wealth of traffic basic data, but these basic data have not played their due role, and the utilization rate is low. With the continuous increase of traffic volume, the traffic volume of expressways in some cities or between cities, such as Beijing-Tianjin-Tang Expressway, Guangzhou-Shenzhen Expressway, Shanghai-Nanjing Expressway, etc., has basically reached saturation, and there is a considerable period of traffic every day. The speed is already lower than the designed minimum speed, queues are formed at toll gates and other places, and the expressway section is seriously congested. Therefore, it ...

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Application Information

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IPC IPC(8): G08G1/01
Inventor 王艳辉张晨琛肖雪梅郭晓妮罗俊孙倩
Owner BEIJING JIAOTONG UNIV
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