System and method of using traffic conflicts for judging accident-prone sections

A traffic conflict and road section technology, applied in the field of traffic safety, can solve problems such as the inability to obtain traffic conflict data, and achieve the effect of improving precision, observing conflicts accurately and scientifically, observing conflicts more.

Inactive Publication Date: 2014-08-06
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention lies in the inability to obtain accurate traffic conflict data in the pri

Method used

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  • System and method of using traffic conflicts for judging accident-prone sections
  • System and method of using traffic conflicts for judging accident-prone sections
  • System and method of using traffic conflicts for judging accident-prone sections

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment provides a method of using traffic conflicts to identify accident-prone road sections, such as figure 1 shown, including the following steps:

[0054] S1: Set the traffic flow parameter detection equipment to collect the traffic flow data of the road section to be judged in real time. The traffic flow data includes the conflict distance Dh, the conflict angle θ, the conflict vehicle speed, and the flow rate. The conflict distance Dh is the conflict vehicle on the same lane. the distance between the front and rear vehicles;

[0055] S2: According to the traffic flow data obtained in step S1, determine the number of conflicts C of the road section to be judged within the survey time interval, if the number of conflicts C≧t, then determine that the road section to be judged is an accident-prone road section, where t is critical traffic threshold;

[0056] S3: Determine the type of each conflict and determine the number of occurrences of different conflict...

Embodiment 2

[0097] This embodiment provides a system for identifying accident-prone road sections by using traffic conflicts, such as figure 2 shown, including:

[0098] Data collection module: used for real-time collection of traffic flow data on the road section to be judged, the traffic flow data includes conflict distance Dh, conflict angle θ, conflict vehicle speed, flow rate, and the conflict distance Dh is the front and rear vehicles of conflict vehicles on the same lane the distance between;

[0099] Accident judgment module: used to determine the number of conflicts C of the road section to be judged within the investigation time interval according to the traffic flow data obtained by the data collection module, if the number of conflicts C≧t, it is determined that the road section to be judged is accident-prone section, where t is the critical traffic threshold;

[0100] Traffic conflict type judgment module: used to judge the type of each conflict and determine the number of...

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Abstract

The invention discloses a system and a method of using traffic conflicts for judging accident-prone sections. Using the system and the method can not only judge whether a certain section is an accident-prone section or not but also give out accident-prone time periods and prone accident types to provide specific data support for subsequent warning and management works. Owing to supermatic judgment means, the defect of incompleteness of an existing traffic accident database is overcome, the system and the method are more accurate and scientific as compared with previous manual observation of conflicts, and application of traffic conflict techniques to engineering can be effectively promoted. By adopting traffic flow parameter detection equipment to acquire continuous 24-hour traffic flow information as auxiliary and by using a stratified sampling investigation method to provide the basis for selection of traffic conflict investigation time periods, precision in determination of traffic conflict amount can be improved, and the system and the method are also applicable to nighttime traffic conflict investigation and have practical engineering application value in the aspect of providing the basis for selection of traffic conflict investigation time periods.

Description

technical field [0001] The invention relates to the field of traffic safety, in particular to a method and system for judging accident-prone road sections by using traffic conflicts. Background technique [0002] Traffic conflict refers to two or more road users who are close to each other in time and space under observable conditions, so that if any party does not change its trajectory, a collision will occur. The essence of traffic conflict is the manifestation of unsafe factors in traffic behavior. Its development may lead to accidents, and may also avoid accidents due to the adoption of appropriate risk avoidance behaviors. Therefore, accidents and conflicts have very similar forms. The only difference is whether or not a direct injurious consequence has occurred. According to domestic and foreign investigations and studies, there is a certain substitution relationship between accidents and conflicts, especially serious conflicts and traffic accidents have a good linear...

Claims

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Application Information

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IPC IPC(8): G08G1/01
Inventor 顾怀中陆建叶坚王锦尧苏子毅
Owner SOUTHEAST UNIV
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