Development continues in wider use of remote and centralized control, automatic interlocking at crossings, and replacement of semaphores by light signals. From Annual Signaling Statistics for 1942, issued by Am Interstate Commerce Commission.


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    Titel :

    Signalling progress in U.S.A.


    Weitere Titelangaben:

    Ry Gaz


    Erschienen in:

    Erscheinungsdatum :

    1943


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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