Explains present system, combination of arms and colored lights, and describes proposed system, color position light signals for both day and night use.


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    Title :

    The Baltimore and Ohio railroad company color position light signals


    Additional title:

    Int. Ry. Congress Assn. -- Bul


    Contributors:


    Publication date :

    1924


    Size :

    5 pages


    Remarks:

    1 Fig.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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