Diagram and information regarding new comprehensive coordinated automatic central system in downtown Boston; progressive control eliminates stopping period which is inherent in synchronized control; timing schedule shows average speed 15 m.p.h.; pedestrian periods have been provided at each intersection; three-color system.


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    Title :

    Automatic traffic signal lights


    Additional title:

    Nation's Traffic


    Contributors:

    Published in:

    Publication date :

    1928


    Size :

    2 pages


    Remarks:

    2 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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