Control of all trains at 69th street terminal of Market Street-Frankford subway-elevated lines, of Philadelphia Rapid Transit Co, facilitated by installation of new interlocking plant; Union Switch and Signal Co, Model 14, electropneumatic interlocking machine, having 18 working levers and 21 spare spaces, is of sufficient capacity for ultimate track layout.


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    Title :

    Controlling 800 trains a day


    Additional title:

    Transit J


    Published in:

    Transit Journal ; 82 , n 8 ; p 270-271 + 298-299


    Publication date :

    1938


    Size :

    2 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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