|Table of Contents|

Traffic safety assessment of expressway in the accident(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2012年06期
Page:
78-82
Research Field:
Publishing date:

Info

Title:
Traffic safety assessment of expressway in the accident
Author(s):
LIU Jun-de1; 2;  XU bing3;  LIANG Yong-dong1;  MA Rong-guo1
1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Department of Transportation, Government of Cangzhou, Cangzhou 061000, Hebei, China 3. Department of Transportation, Government of Liaoning Province, Shenyang 110003, Liaoning, China
Keywords:
traffic engineering;  accident;  traffic safety;  cellular automata;  assessment
PACS:
U491.112
DOI:
-
Abstract:
In order to make a reasonable assessment of traffic safety on the expressway in the accident, the lane changing behavior was analyzed under the condition of traffic accident. It was found that lane changing behavior just satisfied the critical condition of no rear-end with front vehicle and no collision with the rear car was more likely to lead to accidents. Therefore, the changing lane behavior under critical conditions, that is traffic conflict, was selected as road safety evaluation indicators under the condition of accidents. According to the rules of improved transfer road and following car rules of NaSch model, the vehicle location and speed were updated, the appropriate vehicle arrival law was determined by the traffic flow conditions, and simulation parameters of the carts ratio and the saturation were put in respectively, and then the mixed traffic flow of highway was simulated in the accident. The results show that the traffic conflicts under different carts ratios and saturations reflect road saftey of expressway, the highway traffic safety is classified as more dangerous, dangerous, safe, and safety. The evaluation method of traffic safety of accident has been obtained. 3 tabs, 2 figs, 14 refs.

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Last Update: 2012-12-30