In recent years, left-turn waiting areas were increasingly used to improve traffic efficiency at signalized intersections in China. This paper evaluated the operational impacts of left-turn waiting areas at dual left-turn lanes at signalized intersections. An analytical model was proposed to estimate the capacity of dual left-turn lanes with waiting areas. Based on the data collected at 12 sites in Nanjing, cross-sectional analysis were conducted to compare the start-up lost time and saturation headways of left-turn passenger cars under four scenarios. The results indicated that outside left-turn lanes provide slightly lower. For both the inside and outside left-turn lanes, the use of left-turn waiting areas did not significantly affect the saturation headways of left-turn passenger cars behind the stop bar. It was found that left-turn waiting areas increased capacity of dual left-turn lanes and the capacity gains would increase with the increase in the size of the left-turn waiting areas.


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    Titel :

    Evaluating the Operational Impacts of Left-Turn Waiting Areas at Dual Left-Turn Lanes at Signalized Intersections


    Beteiligte:
    Yang, Zhao (Autor:in) / Liu, Pan (Autor:in) / Tian, Zong Z. (Autor:in) / Wang, Wei (Autor:in)

    Kongress:

    The Twelfth COTA International Conference of Transportation Professionals ; 2012 ; Beijing, China


    Erschienen in:

    CICTP 2012 ; 350-361


    Erscheinungsdatum :

    23.07.2012




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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