Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (12): 67-73.doi: 10.3969/j.issn.1000-565X.2016.12.010

• Traffic & Transportation Engineering • Previous Articles     Next Articles

A Control Method of Variable Speed Limits for Highway Mountain Breeze Transit Road in Rainy Days

WEN Hui-ying LIU Min WANG Hai-wei   

  1. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2016-03-14 Revised:2016-08-30 Online:2016-12-25 Published:2016-11-01
  • Contact: 温惠英(1965-)，女，博士，教授，主要从事交通运输规划与管理、交通安全研究． E-mail:hywen@scut.edu.cn
  • About author:温惠英(1965-)，女，博士，教授，主要从事交通运输规划与管理、交通安全研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China(51378222，51578247) and the Natural Science Foundation of Guangdong Province(2016A030310427)

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Abstract:

Rainfall has a greater negative impact on the traffic safety and efficiency in the mountain breeze transit road of mountain highways.In order to ensure the traffic safety on the mountain breeze transit road in rainy days,improve the traffic efficiency,and reduce the adverse effects of the wind-rain coupling,an overall scheme of the variable speed limit system in rainy days is designed for the mountain breeze transit road,and a calculation model of the safe speed under the coupling effects of wind-rain is constructed based on the anti-sideslip and the safe stop- ping sight distance.Then,an evaluation model of the variable speed limit system,which aims to minimize the ave- rage travel time of the vehicle in the monitoring period,is also constructed.Finally,the simulation experiments based on the actual road and meteorological data are carried out by using the Matlab software.The results show that,as compared with the fixed speed limit,the variable speed limit has a better performance in guaranteeing the traffic safety on the mountain breeze transit road of mountain highways in rainy days，and it improves the operating efficiency of vehicles accordingly.

Key words: mountain breeze transit road, variable speed limit control, wind-rain coupling effect, traffic safety

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