Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (12): 99-105,113.doi: 10.3969/j.issn.1000-565X.2015.12.014

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Investigation into Travel Time of Management Unit of Expressway in Disastrous Events

Yan Ying1 Wang Xiao-Fei2   

  1. 1 Key Laboratory of Automobile Transportation Safety Support Technology，Chang'an University，Xi'an 710064，Shaanxi，China; 2． School of Civil Engineering and Transportation，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2015-05-07 Revised:2015-08-20 Online:2015-12-25 Published:2015-11-01
  • Contact: 王晓飞(1980-)，女，博士，讲师，主要从事道路安全研究 E-mail:xiaofeiw@scut.edu.cn
  • About author:阎莹(1981-)，女，博士，副教授，主要从事交通安全研究． E-mail: yanying2199@chd.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(51308059，51408229) ，the China Postdoctoral Science Foundation(2014M552399) and the National Key Technology Ｒesearch and Development Program of the Ministry of Science and Technology of China(2014BAH23F01-1)

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Abstract: In order to effectively serve the route guidance and control management of the expressway corridor network in disastrous events，a method to divide the management unit of road networks is put forward． For the management unit with no disastrous events involved，a travel time characteristic function is established by taking into account the influences of the management unit length，the average speed and the real-time traffic density． By combining the queuing and dissipating characteristics of the management units involving disastrous events and by using the flow and density relationship model，the duration time and dissipation time of incidents are determined，and a travel time calculation model of incident management units is constructed based on the wave theory． Then，the proposed model is modified by taking the real-time safety reliability as a road resistance function． Finally，the effectiveness of the constructed model is verified by an example．

Key words: disastrous event, freeway corridor network, management unit, travel time, wave analysis