期刊
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-TRANSPORT
卷 163, 期 4, 页码 191-201出版社
ICE PUBLISHING
DOI: 10.1680/tran.2010.163.4.191
关键词
field testing & monitoring; safety & hazards; traffic engineering
Safety in the traffic system is often measured by the number and severity of traffic crashes. This long-standing approach has established the use of crash data as an accepted measure of the lack of safety. There is, however, a distinct need for faster, more informative, and more resource-effective methods that yield valid and reliable safety measures and a foundation for predictive modelling. This paper is primarily concerned with traffic safety assessment and prediction based on proximal safety indicators and associated measurement techniques. It reviews the concepts and methods related to three different proximal safety indicators: time-to-accident, time-to-collision and post-encroachment-time. It shows how they can be measured using field data. Similar measures can also be obtained from simulation modelling. The use of simulation models for measuring and predicting intersection safety offers considerable potential for proactive safety analysis.
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