First application of centralized traffic control system in underground railway expedites traffic and reduces operating costs; control machine and track model; Ridge Avenue line signaling system; housing and air system.


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    Title :

    C. T. C. in Philadelphia subway


    Additional title:

    Ry Signaling


    Contributors:

    Published in:

    Publication date :

    1933


    Size :

    4 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    New Philadelphia subway

    Engineering Index Backfile | 1929


    New Philadelphia subway

    Engineering Index Backfile | 1929




    The opening of the Philadelphia subway

    Engineering Index Backfile | 1905