Research on Traffic Characteristics and Traffic Conflicts of the One-Way-Closure Work Zone on Freeway

Abstract:

By analyzing the traffic characteristics and traffic conflicts of the typical one-way-closure work zone on four-lane freeway, the queuing characteristics of vehicles are determined, and the Erlang distribution model which can describe the distribution of time headway is calibrated. The speed distribution characteristics of each component of the work zone are concluded, and the speed limit scales for these components are put forward based on the statistic analysis. The types of traffic conflicts are firstly concluded, and then the identification method of the rear-end conflicts’ severity degree based on TTC technique as well as the prediction model of rear-end conflicts based on Negative Binomial distribution are put forward. The research results are useful to the analysis of traffic conditions of work zones, and they can also be used to evaluate the safety situations of freeway work zones

• Periodical: Advanced Engineering Forum (Volume 5)
• Pages: 26-31
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.5.26
• Online since: July 2012
• Authors: Lai Zheng, Xiang Hai Meng
• Keywords: Freeway, One-Way-Closure, Traffic Characteristic, Traffic Conflict, Work Zone

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