Expressway interleaving area safety evaluation method based on traffic conflicts

A traffic conflict and safety evaluation technology, which is applied in traffic control system, traffic flow detection, road vehicle traffic control system, etc., can solve the problems of decreased safety, frequent lane changes of vehicles, traffic conflict and increase in the number of traffic accidents, etc. Achieve the effect of simple calculation process and improved traffic safety

Pending Publication Date: 2022-01-11
SOUTHEAST UNIV
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  • Application Information

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Problems solved by technology

The weaving area is an important part of the urban expressway, the traffic capacity changes, the vehicles frequently change lanes, a

Method used

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  • Expressway interleaving area safety evaluation method based on traffic conflicts
  • Expressway interleaving area safety evaluation method based on traffic conflicts
  • Expressway interleaving area safety evaluation method based on traffic conflicts

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] like figure 1 As shown, the safety evaluation method for the expressway weaving area of ​​the present invention, the implementation steps are as follows:

[0030] Step 1, dividing the interleaving area into sections.

[0031] A weaving area with a total length of 260m located on Longpan Middle Road, Nanjing City, Jiangsu Province was selected as the research object. According to the actual traffic operation characteristics of the weaving area, it was divided into a 70m confluence area, a 110m internal area of ​​the weave area, and an 80m diversion area. , which are denoted as segment 1, segment 2, and segment 3, respectively.

[0032] Step 2, collecting traffic conflict data.

[0033] UAVs equipped with cameras are used to record video of the traffic operation in the weaving area of ​​the expressway.

[0034] Use video trac...

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Abstract

The invention discloses an expressway interweaving area safety evaluation method based on traffic conflicts, and the method comprises the following steps: S1, dividing an expressway interweaving area into a plurality of sections according to the traffic operation characteristics; S2, collecting traffic conflict data of each section, and dividing traffic conflicts into side-click conflicts, rear-end conflicts, general conflicts and serious conflicts; S3, selecting the traffic conflict risk index of each section as a safety evaluation index; and S4, according to the safety evaluation index value of each section obtained in the step S3, determining the safety level of each section of the interlaced area by using a grey clustering analysis method according to an evaluation matrix result. According to the method, the segmented safety evaluation of the expressway interleaving area can be realized, the safety weak part of the expressway interleaving area is effectively identified, the traffic safety of the expressway interleaving area is improved in a targeted manner, and the method has a certain application value in traffic safety management.

Description

technical field [0001] The invention relates to a safety evaluation method for an expressway weaving area, in particular to a safety evaluation method for an expressway weaving area based on traffic conflicts. Background technique [0002] As the main framework of urban roads, urban expressways play an important role in relieving urban traffic pressure and improving travel efficiency of citizens. They often undertake a considerable proportion of motor vehicle travel with limited road resources. As an important part of the urban expressway, the weaving area changes the traffic capacity, frequently changes lanes, accelerates and decelerates, which leads to an increase in the number of traffic conflicts and traffic accidents, and a decrease in safety. Therefore, it is practical to consider the security of the weaving area. On the other hand, traffic accident data has limitations such as non-disclosure, insufficient breadth and depth, and long collection period. Foreign studie...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26G06K9/62G08G1/01
CPCG06Q10/0635G06Q50/265G08G1/0133G08G1/0137G08G1/012G06F18/23
Inventor 项乔君卢启慧王明远彭铖苑仁腾
Owner SOUTHEAST UNIV
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