In first phase of signal modernization program on Southern Pacific Lines, semaphores between Tucson and Picacho, Ariz, have been replaced with searchlight signals and spring switch mechanism with facing point locks; territory includes 4.6 mi of double track and 42. 6 mi of single track, carrying daily 11 passenger and four freight trains and additional extra freight trains.


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    Titel :

    SP modernizes automatic block


    Weitere Titelangaben:

    Ry Signaling Communications


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    1954


    Format / Umfang :

    3 pages


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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