This report presents a series of research findings from an investigation into roundabout operations. This includes a comparison of several analysis tools for estimating roundabout performance (the Highway Capacity Manual, SIDRA, ARCADY, VISSIM, and SimTraffic); a measurement of rejected headways for the purpose of analyzing critical headway; a review of roundabout lighting practices; and a review of considerations for roundabout site selection. It was found that VISSIM and SIDRA provided the most reliable predictions of roundabout performance for the test site analyzed herein. Additionally, the critical headways measured at this site were significantly lower (at a median value of 2.2 seconds) than other values published in the literature, with driving populations less acquainted with roundabouts. Additionally, a site selection procedure is developed based on a survey of peer agency practices and a checklist is provided for assisting in the determination of whether roundabout control is a feasible alternative for a location. Finally, based upon a review of the literature and practices commonly followed by peer states, we recommend that roundabouts be lighted.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Best Practices for Roundabouts on State Highways


    Beteiligte:
    C. M. Day (Autor:in) / A. M. Hainen (Autor:in) / D. M. Bullock (Autor:in)

    Erscheinungsdatum :

    2013


    Format / Umfang :

    22 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Roundabouts: A Direct Way to Safer Highways

    Ourston, Leif | Online Contents | 1995


    Turbo Roundabouts

    Fortuijn, Lambertus G. H. | Transportation Research Record | 2009


    Crossover Roundabouts

    Hale, Ryan | Transportation Research Record | 2014


    Roundabouts 2013

    TIBKAT | 2013


    Method to Estimate the Level of Service in Elongated Roundabouts Located on Two-Lane Rural Highways

    Avelar Brêtas, Davi Antônio / Bessa, José Elievam / de Andrade, Rafael Quintão | ASCE | 2024