History, theory and practice; requisites for highway-crossing signals; flashing-light type; wig-wag type; maintenance; highway-crossing gates; crossing watchman's annunciators. From Am. Ry. Assn's book, Am. Ry. Signaling Principles and Practices, chapter 23, Highway Crossing Protection.


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    Title :

    Highway crossing protection


    Additional title:

    Int. Ry. Congress Assn. -- Bul



    Publication date :

    1928


    Size :

    15 pages


    Remarks:

    16 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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