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A method for identifying road congestion areas and congested road sections

An identification method and road technology, applied in the field of intelligent transportation, can solve the problems of high subjectivity and waste of manpower in identifying congested areas

Active Publication Date: 2020-11-10
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies in the prior art, the present invention provides a method for identifying road congestion areas and congested road sections, which solves the problems of strong subjectivity and waste of manpower in identifying congested areas in the existing methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0081] 1) Acquiring and judging the availability of GPS data of the vehicle;

[0082] Obtain the user ID, latitude and longitude of the GPS device, and the time stamp of the transmitted data, and determine the availability according to whether the latitude and longitude of the GPS data is within the target area;

[0083] GPS data p(x,y), where x is the longitude and y is the latitude, the accuracy is accurate to five decimal places, for example p(104.07502,30.72682).

[0084] The timestamp is a Unix stamp, for example 1477969186.

[0085] 2) Identify road congestion areas according to the changes in the number of vehicles in the intersection area. If two congestion areas are directly connected by a road section, the two congestion areas are adjacent, and the adjacent congestion areas are merged to obtain a merged congestion area ;

[0086] The data format of the intersection is as follows:

[0087] INTERSECTION_ID User ID INTERSECTION_LONG longitude ...

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PUM

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Abstract

The invention discloses an identification method for traffic jam area and segment of road, which is characterized in that the method includes the following steps: I. obtaining and determining the availability of GPS data of vehicles; II. identifying road traffic jam area according to the number change of vehicles inside the area of road intersection, if two traffic jam areas are directly connectedwith one road segment, then the two traffic jam areas are adjacent, combining the adjacent traffic jam areas to obtain combined traffic jam area; III. generating locations and scope of the combined traffic jam areas in the form of landmarks and scopes; IV. analyzing the distribution characteristics of the road segments with traffic jam among roads, classifying the road segments with traffic jam by subordinated roads and sorting according to the number from small to large, determining the number classification results; V. identifying the traffic jam situation of the road segments according tonumber classification results of the road segments with traffic jam. The identification method for the traffic jam area and segment of road solves the problem of identifying traffic jam within relatively large area scope, adopts two-layer classification method to guarantee the accuracy of the results.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method for identifying road congestion areas and road congestion sections. Background technique [0002] Today, China has entered the era of automobile popularization, and traffic congestion is a common problem faced by major cities. How to timely and accurately identify congested areas within the city has become an urgent problem to be solved. The existing identification methods are mainly based on the scattered road conditions displayed by the real-time urban road network map, and the broadcast personnel in the traffic control center or urban traffic broadcasting, and combine the road conditions based on experience to identify the congested area. This method not only requires a certain amount of manpower, but also the accuracy is greatly affected by the broadcaster's experience and standard preference, and is highly subjective. In order to alleviate urban...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
CPCG08G1/0133
Inventor 徐鹏韩君如陈宜恒刘腾辉叶昌盛
Owner HOHAI UNIV