Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (8): 1786-1791.doi: 10.13229/j.cnki.jdxbgxb20210154

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Traffic risk analysis of moving work zone on right lane of city expressway

Song FANG1,2(),Jian-xiao MA1(),Gen LI1,Ling-hong SHEN1,Chu-bo XU1   

  1. 1.College of Automobile and Traffic Engineering，Nanjing Forestry University，Nanjing 210037，China
    2.College of Locomotive and Vehicle，Nanjing Vocational Institute of Railway Technology，Nanjing 210031，China
  • Received:2021-02-26 Online:2022-08-01 Published:2022-08-12
  • Contact: Jian-xiao MA E-mail:472916417@qq.com;majx@njfu.edu.cn

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Abstract:

The VISSIM simulation software is used to analyze the influence range and driving risk variation rule of moving work zone on right lane of a three-lane urban expressway. The results show that the leftmost lane is only indirectly affected by the moving work zone when the traffic volume reaches 2000 pcu/h. The influence of moving work zone on the middle lane is controlled by the traffic volume and the speed of moving work zone. A range of 200 m behind moving work zone on the right lane is directly affected by moving work zone. When the traffic volume reaches 1600 pcu/h or lower， with the decrease of the traffic volume and the increase of the speed of moving work zone， the average driving risk of the road section decreases gradually. The research results can provide a scientific basis for the operation and management of urban road working vehicles.

Key words: engineering of communications and transportation system, city expressway, moving work zones, traffic risk

CLC Number: 

  • U491

Fig.1

Speed statistics of left lane"

Fig.2

Speed statistics of middle lane"

Fig.3

Speed statistics of right lane"

Table 1

Comparison table of critical acceleration and driving risk index"

临界加速度/（m·s-2）行车风险指数

<2

2~4

0

1

4~52
5~64
6~76
7~88
>810

Table 2

Average driving risk statistics of road sections"

路段区间/m2000 pcu/h1600 pcu/h1200 pcu/h
5 km/h10 km/h15 km/h5 km/h10 km/h15 km/h5 km/h10 km/h15 km/h
平均值3.875.027.285.864.934.764.564.394.26
0~506.025.015.938.166.834.47.236.656.00
50~1003.303.295.516.154.203.983.723.563.43
100~1503.123.387.893.943.143.624.423.113.12
150~2003.063.068.386.946.175.434.534.364.27
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