Details of all-relay interlocking installed at Promenade street in Providence, RI, by New York, New Haven and Hartford Railroad, to replace two previous interlockings. first of which was 77-lever electric plant and second was 40-lever mechanical interlocking.


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    Title :

    New all-relay interlocking at providence, R. I., on New Haven


    Additional title:

    Ry Signaling


    Published in:

    Publication date :

    1944


    Size :

    5 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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