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Black spot recognition method for pedestrian traffic accidents in urban road network

A traffic accident and identification method technology, applied in the field of pedestrian traffic safety, can solve the problems of low precision, high subjectivity, poor visibility, etc., and achieve the effect of realizing spatial positioning, improving safety, and clearly recording

Active Publication Date: 2017-10-31
SOUTHEAST UNIV
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AI Technical Summary

Problems solved by technology

[0004] In view of the sporadic characteristics of pedestrian traffic accidents in the prior art, and the defects and deficiencies of traditional accident black spot recognition technology, such as low precision, high subjectivity, and poor visibility, the present invention proposes a pedestrian traffic accident black spot recognition method for urban road networks. The method solves the problem of too many zero values ​​in traffic accident data, and improves the accuracy of identifying pedestrian traffic accident black spots; realizes the spatial positioning of pedestrian accident black spots through address decoding, and enhances the visibility of the system

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  • Black spot recognition method for pedestrian traffic accidents in urban road network
  • Black spot recognition method for pedestrian traffic accidents in urban road network
  • Black spot recognition method for pedestrian traffic accidents in urban road network

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Embodiment 1

[0088] The present invention will be further described in conjunction with accompanying drawing, choose 2010-2012 Nanjing main urban area road network as object, such as Figure 1-3 Shown:

[0089] 1. Establish a standardized pedestrian traffic accident database

[0090] Select the road network of Nanjing's main urban area from 2010 to 2012 as the object, and encode the address information of the pedestrian traffic accident data that occurred within this time period according to the following address coding rules:

[0091] The address information is divided into three attributes of intersection, direction, and road section number for address encoding.

[0092] 1) Intersection attribute, denoted by i

[0093] According to its longitude and latitude coordinates, from north to south, from west to east, the road intersections in the urban road network are coded according to i=1,2,3...n, and the coding diagram is as attached figure 2 shown;

[0094] 2) Direction attribute, den...

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Abstract

The invention provides a method for identifying pedestrian traffic accident black spots on urban road networks. By establishing a standardized pedestrian traffic accident database for pedestrian traffic accident data in a specified area within a specified time period, the accident frequency of each unit road section is calculated, and the estimated The parameter values ​​of the distribution model of pedestrian traffic accidents are used to obtain the probability of each accident frequency and the cumulative probability of accident frequencies, determine the upper threshold value of the black spots of pedestrian traffic accidents under a given confidence level, identify the black spots of pedestrian traffic accidents, and realize pedestrian traffic accidents through reverse decoding. Spatial localization and display of accident black spots. It overcomes the shortcomings of the existing accident black spot recognition methods such as low precision, high subjectivity, and poor visibility, and has important engineering application value in reducing the incidence of pedestrian traffic accidents and improving the safety of urban pedestrian traffic systems.

Description

technical field [0001] The invention relates to the field of pedestrian traffic safety, in particular to a method for identifying black spots of pedestrian traffic accidents on urban road networks, which identifies the black spots of pedestrian traffic accidents on urban road networks by analyzing the spatial distribution of pedestrian traffic accident data on the urban road network. Background technique [0002] In recent years, with the rapid development of social economy, people's social activities have become more and more frequent, and the traffic volume of motor vehicles and pedestrians in cities has risen sharply, which greatly increases the probability of accidents between people and vehicles. On the other hand, due to the neglect of pedestrian traffic safety for a long time, the number of pedestrian casualties in traffic accidents in our country remains high, which has evolved into a serious social problem. According to the analysis of accident statistics from the T...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 陆丽丽任刚王义王炜
Owner SOUTHEAST UNIV
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