Retarding barriers, red-green traffic type signals, and crossing bell, all controlled automatically by track circuits, were installed at Newmarket. N H, to replace gates; westerly barrier located 70 ft from nearest rail, while easterly barrier is 79 ft from rail; barriers each consist of two 10-ft sections, which extend entirely across 20-ft paved section of highway.


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    Titel :

    Barriers on Boston and Maine


    Weitere Titelangaben:

    Ry Signaling


    Erschienen in:

    Erscheinungsdatum :

    1938


    Format / Umfang :

    3 pages


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Barriers on Boston and Maine

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