It is generally accepted that the level of service (LOS) at intersections significantly affects the overall LOS of the road system. It is also known that LOS at an intersection can be adversely affected by frequently allowing left-turning vehicles to block through traffic. In addition, crash rates tend to be higher at intersections than on through sections of a road. The separation of left-turning vehicles from through traffic is therefore an important condition for the safe and effective operation of intersections. Existing guidelines for installing left-turn lanes have several limitations. They are mainly based on the traffic volumes at the intersection, and they use deterministic models with fixed gap acceptance and/or left-turn maneuver times. In addition, the guidelines for left-turn lanes for unsignalized intersections and signalized intersections must be specific for the type of intersection.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Development of Left-Turn Lane Guidelines for Signalized and Unsignalized Intersections


    Contributors:
    V. R. Lakkundi (author) / B. Park (author) / N. J. Garber (author) / M. D. Fontaine (author)

    Publication date :

    2004


    Size :

    80 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Development of Left-Turn Lane Warrants for Unsignalized Intersections

    Fitzpatrick, Kay / Brewer, Marcus A. / Eisele, William L. et al. | Transportation Research Record | 2012


    Development of Left-Turn Lane Warrants for Unsignalized Intersections

    K. Fitzpatrick / M. A. Brewer / J. S. Gluck et al. | NTIS | 2012



    Left-Turn Accommodations at Unsignalized Intersections

    K. Fitzpatrick / M. A. Brewer / W. I. Eisele et al. | NTIS | 2013


    Guidelines for left-turn phasing at signalized intersections

    Stamatiadis, N. / Agent, K. R. / Swedish National Road and Transport Research Institute (VTI) et al. | British Library Conference Proceedings | 1997