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Road condition information assessment method and apparatus

A technology of road condition information and road sections, applied in the field of intelligent transportation, can solve the problem of low accuracy of real-time road condition information

Active Publication Date: 2015-11-04
ALIBABA (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a method and device for evaluating road condition information to solve the problem in the prior art that the accuracy of evaluating real-time road condition information of road sections published by traffic data providers is low

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  • Road condition information assessment method and apparatus
  • Road condition information assessment method and apparatus
  • Road condition information assessment method and apparatus

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Embodiment 1

[0075] Such as figure 1 As shown, it is a schematic flow diagram of the road condition information evaluation method proposed in Embodiment 1 of the present invention, and its specific processing flow is as follows:

[0076] Step 11, clustering each GPS track point from the floating parking space to obtain each clustered track segment, wherein the distance between any two adjacent GPS track points in the clustered track segment is not more than Set the distance threshold.

[0077] In order to evaluate the accuracy of the published real-time road condition information, the intelligent transportation system needs to obtain the actual road condition information of each road section. Among them, the actual road condition information of each road section can be obtained through the data collected by the floating car.

[0078] Floating vehicles generally refer to buses and taxis that are equipped with on-board GPS devices and drive on urban arterial roads. During the driving proce...

Embodiment 2

[0113] Based on the road condition information evaluation method proposed in the first embodiment of the present invention, the second embodiment of the present invention proposes a road condition information evaluation device, the structure of which is as follows Figure 6 shown, including:

[0114]The clustering unit 61 is used to perform clustering processing on each GPS track point positioned by the floating car to obtain each track segment clustered out, wherein, any adjacent two GPS track points in the clustered track segment The distance between them does not exceed the set distance threshold;

[0115] A trajectory segment judging unit 62, configured to determine whether the trajectory segment clustered by the clustering unit 61 is a trajectory segment corresponding to a parking behavior caused by a signal light;

[0116] The track section confirming unit 63 is used for confirming the track section as a signal light parking track section when the judgment result of the...

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Abstract

The invention discloses a road condition information assessment method and an apparatus. The method comprises the following steps of carrying out cluster processing on each GPS track point positioned by a floating vehicle and acquiring each clustered track segment, wherein a distance between any two adjacent GPS track points in the clustered track segment does not exceed a set distance threshold; determining whether the clustered track segment is a track segment corresponding to a parking behavior caused by a signal lamp; if the clustered track segment is the track segment corresponding to the parking behavior caused by the signal lamp, confirming the track segment as a signal lamp parking track segment; according to the determined signal lamp parking track segment, carrying out correction processing on a passing speed of the floating vehicle in a road segment where the signal lamp parking track segment is located; according to the passing speed after the correction processing, carrying out accuracy assessment on published real-time road condition information. By using the technical scheme of the invention, a problem that accuracy of real-time road condition information of the road published by an assessment traffic data provider is low in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a road condition information evaluation method and device. Background technique [0002] Real-time traffic information refers to information that reflects current road traffic conditions. By publishing real-time road condition information, users can understand real-time road conditions, thereby effectively improving the user's travel efficiency, reducing the user's travel cost, balancing the traffic flow of the road network, and achieving the purpose of alleviating road traffic congestion. [0003] In the prior art, each traffic data provider obtains the real-time traffic speed of each road segment according to the acquired traffic data, and then determines the real-time traffic status of each road segment according to the real-time traffic speed of each road segment. Wherein, the road condition status of the road segment reflects the traffic status of the roa...

Claims

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Application Information

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IPC IPC(8): G08G1/01
Inventor 张晓坤
Owner ALIBABA (CHINA) CO LTD
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