Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (7): 15-20.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Real-Time Safety Reliability of Management Unit of Freeway Network

Wang Xiao-fei1  Guo Zhong-yin2   

  1. 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. School of Transportation Engineering, Tongji University, Shanghai 201804, China
  • Received:2008-09-01 Revised:2009-02-13 Online:2009-07-25 Published:2009-07-25
  • Contact: 王晓飞（1980-），女，讲师，博士，主要从事道路安全研究． E-mail:xiaofeiw@scut．edu．en
  • About author:王晓飞（1980-），女，讲师，博士，主要从事道路安全研究．
  • Supported by:

    国家＂863＂高技术计划项目（2007AA11Z235）

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Abstract:

The operation safety of freeway is the basic prerequisite to the high-efficiency operation. This paper puts forward the concept of real-time safety reliability （RTSR） to characterize the operation safety of management units （MUs） of freeway network. In the investigation, first, the division method of management units is proposed. Next, the RTSR of MUs of freeway network is divided into a static safety reliability and a dynamic one, which are then determined by the fuzzy comprehensive judgment and by the reliability graph analysis based on single-vehicle driving risk, respectively. Finally, an example is presented to expatiate the calculation course of RTSR.

Key words: freeway network, management unit, operation safety, single-vehicle driving risk, realtime safety reli-ability