Large electropneumatic interlocking with all relay controls installed at Roanoke, Va; interlocking machine is of sloping panel type with miniature levers similar to those used on CTC machines; layout of tracks and signals shown.


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    Title :

    Modern interlocking on Norfolk and Western


    Additional title:

    Ry Signaling Communications


    Published in:

    Publication date :

    1951


    Size :

    4 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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