Discerning free driving from car-following state is an important issue in modeling driver's longitudinal behavior. Existing studies suggested that there is a turning point for correlation coefficient of leading and following vehicles' speed between free driving and car-following states. In this paper, by applying the adopted method to trajectory data, a longer 12 s time gap threshold between free driving and car-following is reported. Also a notable difference across experienced and beginner driver groups is found. This study could provide some evidence on driver behavior heterogeneity, and also raise the doubt for a universal "free" vehicle standard.


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    Title :

    Discerning Free Driving from Car-Following State Based on Trajectory Data from Active Mode Car-Following Experiment


    Contributors:
    Wu, Fan (author) / Jiang, Jun (author) / Hu, Wu-lin (author) / Lu, Jian (author)

    Conference:

    11th International Conference of Chinese Transportation Professionals (ICCTP) ; 2011 ; Nanjing, China


    Published in:

    ICCTP 2011 ; 776-787


    Publication date :

    2011-07-26




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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