Highlights We investigate dynamic tradeoff between safety and efficiency in discretionary lane-changing behavior. A random parameters logit approach with heterogeneity in means and variances is employed. We demonstrate that drivers consider the tradeoff between distance and speed at the same time. It demonstrates that the lane-changing decision is a dynamic process with changed influencing factors.

    Abstract The discretionary lane-changing behavior is highly associated with crash occurrence. This paper investigates the dynamic tradeoff between safety and efficiency and influencing factors of the decision-making process for the discretionary lane-change. A random parameters logit approach with heterogeneity in means and variances is employed on a microscopic vehicle trajectory dataset. Four vehicles are analyzed as a discretionary lane-changing group, and both the distance-related and speed-related factors are taken into account to examine their dynamic effects. The modeling results indicate that (1) two distance-related variables produce significant random parameters with heterogeneity in means and variances, while there is only one speed-related variable having significant result for heterogeneity in means and variances; (2) the relationship between the speed of lane-changing vehicle and the heterogeneity in mean of vehicle clearance distance between leading vehicle in current lane and lane-changing vehicle quantitatively demonstrates that when the driver decides whether to change lanes, the driver considers the tradeoff between distance (i.e., safety) and speed (i.e., efficiency) at the same time; and (3) the number of significant variables is gradually decreased during the lane-changing decision-making process. It demonstrates that the lane-changing decision is a dynamic process where drivers gradually select more critical factors and pay more attention to them.


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    Titel :

    The dynamic tradeoff between safety and efficiency in discretionary lane-changing behavior: A random parameters logit approach with heterogeneity in means and variances


    Beteiligte:
    Li, Ye (Autor:in) / Gu, Ruifeng (Autor:in) / Lee, Jaeyoung (Autor:in) / Yang, Min (Autor:in) / Chen, Qinghong (Autor:in) / Zhang, Yinggui (Autor:in)


    Erscheinungsdatum :

    2021-02-06




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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