Autonomous vehicles (AVs) will transform urban mobility into mixed traffic consisting of AVs and human-driven vehicles (HVs). In this chapter, we first review recent modeling works on mixed traffic flow and summarize research gaps. Then a stochastic car-following model is proposed to model the car-following behavior of AVs and HVs. This chapter also analyses the safety of mixed-traffic flow by considering the impact of AVs on their followers’ car-following behaviours. This model successfully explains different types of traffic instabilities that is observed in real-world; second, we conduct a series of numerical simulations showing that AVs can improve traffic safety without decreasing traffic throughput. The sensitivity test further reveals that traffic safety risk decreases with the growth of the AV penetration rate (PR), as is indicated by the decreased average standard deviation (SD) of vehicle speeds and time integrated time-to-collision (TIT).


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    Title :

    Modeling Microscopic Traffic Behaviors for Connected and Autonomous Vehicles


    Contributors:
    Zhu, Yongdong (editor) / Cao, Yue (editor) / Hua, Wei (editor) / Xu, Lexi (editor) / Xu, Tu (author) / Zhu, Yongdong (author)


    Publication date :

    2023-11-01


    Size :

    16 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English