The objective of the research was to develop guidelines for the use of exclusive/permissive left-turn signal phasing. This was achieved by collecting data on traffic and roadway conditions for exclusive, exclusive/permissive, and permissive left-turn phasings and then analyzing the data to identify relationships between the left-turn phasings and traffic and roadway conditions. The guidelines addressed the following: (1) volume guidelines based on peak hour minimum left-turn volume and the product of the peak hour left-turn and opposing volumes; (2) annual left-turn accident experience; (3) left-turn traffic conflict experience based on critical number and rates; (4) left-turn delay; and (5) site condition factors identified in the study.


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    Title :

    Guidelines for Exclusive/Permissive Left-Turn Signal Phasing


    Contributors:

    Publication date :

    1985


    Size :

    86 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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