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Recognition method of motor vehicle valid traffic conflict based on crashing time of two vehicles

A traffic conflict and motor vehicle technology, applied in the direction of anti-collision system, etc., can solve the problems of misjudgment of actual dangerous traffic incidents, etc., and achieve the effect of reflecting the actual level of traffic safety

Inactive Publication Date: 2013-05-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current identification of traffic conflicts, it is believed that the occurrence of risk avoidance behaviors represents the occurrence of conflicts. This method of identification will cause a large number of traffic incidents that do not have actual danger to be misjudged as traffic conflicts.

Method used

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  • Recognition method of motor vehicle valid traffic conflict based on crashing time of two vehicles
  • Recognition method of motor vehicle valid traffic conflict based on crashing time of two vehicles

Examples

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Effect test

Embodiment 1

[0022] Example 1: A certain unsignal controlled intersection is known as figure 2 As shown, there is a potential conflict point between the through traffic flow on the first entrance road and the through traffic flow on the second entrance road. During a traffic conflict investigation, it was found that the first conflicting vehicle took the risk-avoidance behavior in a certain traffic incident, and the second conflicting vehicle did not. Risk behavior, the process of identifying whether the traffic incident is a valid traffic conflict through the method of the present invention is as follows:

[0023] 1) It is known that the position of the potential conflict point between the first conflicting vehicle and the second conflicting vehicle is as follows: figure 2 As shown, the first conflicting vehicle took the risk avoidance behavior in the process of driving to the conflict point, and the second conflicting vehicle did not take the risk avoidance behavior in the process of driv...

Embodiment 2

[0029] Example 2: It is known that a certain unsignal controlled intersection such as figure 2 As shown, there is a potential conflict point between the through traffic flow on the first entrance road and the through traffic flow on the second entrance road. During a traffic conflict investigation, it was found that both the first conflicting vehicle and the second conflicting vehicle had taken risk avoidance behavior in a certain traffic incident. The process of identifying whether the traffic incident is a valid traffic conflict by the method of the present invention is as follows:

[0030] 1) The position of the conflict point between the first conflicting vehicle and the second conflicting vehicle is known as figure 2 As shown, the first conflicting vehicle and the second conflicting vehicle both took risk avoidance behaviors in the process of driving to the conflict point. It was observed that the first conflicting vehicle took risk avoidance behavior earlier than the seco...

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Abstract

The invention discloses a recognition method of a motor vehicle valid traffic conflict based on crashing time of two vehicles. The recognition method comprises selecting conflicting point, judging whether the two vehicles which crash with each other take risk-avoiding behavior and other steps. Crashing distance and running speeds of the two vehicles which conflict with each other when risk-avoiding behavior is taken are investigated respectively, then crashing time is calculated and traffic accident risk is judged whether to exist, and the judgment is used for recognizing traffic conflict effectively. Compared with traditional recognition method which recognizes traffic accident just according to risk-avoiding behavior, the recognition method of the motor vehicle valid traffic conflict based on crashing time of two vehicles excludes false conflicts which are of no probability of traffic accident, so that traffic conflict investigation result is closely related with the actual traffic accidents, effectiveness and reliability of traffic conflict investigation are improved, and good conflict data are provided for traffic safety evaluation by means of traffic conflict technology.

Description

Technical field [0001] The invention belongs to the field of traffic safety evaluation, and specifically relates to an effective vehicle traffic conflict identification method based on the collision time of two vehicles. Background technique [0002] Traffic conflict technology is currently the most widely used indirect evaluation method for traffic safety at home and abroad. Traffic conflict technology uses traffic conflict as a substitute indicator of traffic accidents to evaluate road traffic safety. Compared with traditional traffic safety evaluation methods based on traffic accident data analysis, traffic conflict technology does not rely on the accumulation of perfect accident statistics. The advantages of rapid data acquisition, large sample size, and short evaluation period have attracted attention since it was introduced to my country in the 1980s. The core of traffic conflict technology is to use traffic conflict as an evaluation index to replace traffic accidents. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/16
Inventor 刘攀陈昱光柏璐张鑫蒋璇俞灏羊钊郭延永
Owner SOUTHEAST UNIV
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