Two field experiments have been carried out with a commercially available Adaptive Cruise Control system, one in an urban environment and one in the highway. The time-gap policy is mapped for the whole speed range. It is shown that while the system follows a constant time-gap policy for highway speeds, for lower, urban speeds, the time-gap increases as the speed decreases. A new time-gap policy is also provided by a recent UN regulation for level 3 Automated Lane Keeping Systems. The three different options are compared by drawing the density-flow diagram. They are further investigated for possible dynamic phenomena using microscopic traffic simulation. The results show that the observed time-gap policy can induce phenomena such as capacity drop and increase string instability. The time-gap policy coming from the regulation is producing stable but lower traffic flow.


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    Titel :

    Traffic impacts of commercial Adaptive Cruise Control time-gap policy


    Beteiligte:


    Erscheinungsdatum :

    16.06.2021


    Format / Umfang :

    3870504 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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