This paper addresses the impacts of Adaptive (Intelligent) Cruise Control (ACC) laws on the traffic flow. Semi-automated vehicles, such as ACC Vehicles, with the capability to automatically follow each other in the same lane, will coexist with manually driven vehicles on the existing roadway system before they become universal. This mixed fleet scenario creates new capacity and safety issues. In this paper, simulation results of various mixed fleet scenarios under different ACC laws are presented. Explicit comparison of two ACC laws, Constant Time Headway (CTH) and Variable Time Headway (VTH), are based on these results. It is found that the latter one has better performance in terms of capacity and stability of traffic. Throughput increases with the proportion of CTH vehicles when flow is below capacity conditions. But above capacity, speed variability increases and speed drops with the CTH traffic compared with manual traffic, while the VTH traffic always performs better.


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    Title :

    Evaluation of Impacts of Adaptive Cruise Control on Mixed Traffic Flow


    Contributors:
    Zou, Xi (author) / Levinson, David (author)

    Conference:

    International Conference on Traffic and Transportation Studies (ICTTS) 2002 ; 2002 ; Guilin, China



    Publication date :

    2002-07-10




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Evaluation of Impacts of Adaptive Cruise Control on Mixed Traffic Flow

    Zou, X. / Levinson, D. / American Society of Civil Engineers | British Library Conference Proceedings | 2002



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