Requisites for track welding or heat treating in track circuit territory; requisites for a-c and d-c coded signal systems; flasher relay; tractive armature d-c neutral interlocking relay; centralized traffic control type neutral d-c relay; requisites for protection of oil sidings; development of proposed inductive coordination measures involving railroad power lines and power equipment. (See also - n 1 Mar 13 1939 p 65-96)


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    Title :

    Committee IV -- Automatic block signaling


    Additional title:

    Assn Am Railroads -- Proc (Signal Sec)


    Conference:

    Association of American Railroads -- Meeting ; 1939 Automatic block



    Publication date :

    1939


    Size :

    23 pages


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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