Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (2): 37-43.doi: 10.3969/j.issn.1000-565X.2013.02.007

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Setting Model of Safe Distance of Advance Guide Signs at Highway Exits

Liu Wei-ming Deng Ru-feng Zhang Yang Zhuang Yan-hao   

  1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2012-04-05 Revised:2012-09-17 Online:2013-02-25 Published:2013-01-05
  • Contact: 刘伟铭(1963-),男,教授,博士生导师,主要从事智能交通系统、数据挖掘技术及其应用、道路收费、交通安全研究. E-mail:lwmgljt@sohu.com
  • About author:刘伟铭(1963-),男,教授,博士生导师,主要从事智能交通系统、数据挖掘技术及其应用、道路收费、交通安全研究.
  • Supported by:

    国家自然科学基金资助项目(50978106)

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Abstract:

In order to improve the safety performance of advance guide signs (AGSs) at highway exits for the di-verging area, the characteristics of the diverging area and the visual recognizing-exiting behaviors of the driver are taken into consideration, and a setting model of safe distance of AGSs, which reveals the effects of traffic flow, de-sign speed and lane number on lane-changing behaviors, is constructed based on the analysis of the computation mode of lane-changing driving distance. Then, a simulation is carried out with TSIS-CORSIM. The results indicate that, for a three-lane expressway with a design speed higher than 110km/ h, an AGS setting distance of 700m may result in minimum lane-changing number of vehicles proportionally dispersed in the diverging area, which means that the safe distance is reasonably set.

Key words: highway engineering, advance guide sign, lane change, safety performance, diverging area

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