During the permitted left-turn green phase at intersections on divided highways, if the median of the major road is relatively wide, the simultaneously-turning vehicles in the opposite left-turn lane frequently block the driver's view. This situation may contribute not only to a serious safety problem because of drivers' misjudging gaps among the opposing trough traffic, but may also lead to needless delays for the left-turning traffic since those cautious drivers reject physically adequate gaps. This study confirmed the serious negative effect of the sight-distance problem on both traffic safety and operation efficiency for unprotected left-turn traffic.


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    Title :

    Intersection Sight Distance for Unprotected Left-Turn Traffic


    Contributors:
    E. Radwan (author) / X. Yan (author)

    Publication date :

    2006


    Size :

    128 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Geometric Models to Calculate Intersection Sight Distance for Unprotected Left-Turn Traffic

    Yan, Xuedong / Radwan, Essam | Transportation Research Record | 2004



    Geometric Models to Calculate Intersection Sight Distance for Unprotected Left-Turn Traffic

    Yan, X. / Radwan, E. / National Research Council (U.S.) | British Library Conference Proceedings | 2004