Traffic flow Impacts of a congestion assistant

Cornelie van Driel, Bart van Arem

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    This paper presents the results from a microscopic traffic simulation study that was conducted to investigate the impacts of a so-called Congestion Assistant on traffic efficiency and traffic safety. The Congestion Assistant is an in-vehicle system that supports the driver with an Active pedal when approaching a traffic jam and a Stop & Go when driving in a traffic jam. Six variants of the Congestion Assistant with different equipment rates on a four-lane highway with a lane drop were assessed. The traffic simulation tool was calibrated and validated using measured loop data on a segment of the Dutch A12 highway. The Congestion Assistant was found to reduce the amount of congestion significantly, especially due to the Stop & Go. This function led to more efficient car-following behavior by adapting smaller headways and eliminating the reaction time of drivers. The Active pedal of the Congestion Assistant hardly influenced traffic efficiency; rather it affected traffic safety through a safer approach to a jam.
    Original languageEnglish
    Title of host publicationTRB 87th Annual Meeting, 13- 17 January 2008, Washington DC, USA
    Subtitle of host publicationCompendium of Papers
    Place of PublicationWashington, DC
    PublisherTransportation Research Board (TRB)
    Number of pages14
    Publication statusPublished - 13 Jan 2008
    Event87th Transportation Research Board (TRB) Annual Meeting 2008 - Washington, United States
    Duration: 13 Jan 200817 Jan 2008
    Conference number: 87


    Conference87th Transportation Research Board (TRB) Annual Meeting 2008
    Country/TerritoryUnited States


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