Tabulation by Canadian and United States railroads of installations in following classes: automatic block, retarders and switches in yards, centralized traffic control, interlocking, highway crossing protection, spring switches; table by type of construction for years 1942 through 1952. (see also Ry Signaling and Communications v 46 n 1 Jan 1953 p 33-8)


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    Title :

    Signal construction [midline ellipsis] 1952


    Additional title:

    Ry Age


    Contributors:
    Dunn, J.H. (author)

    Published in:

    Railway Age ; 134 , n 2


    Publication date :

    1953


    Size :

    6 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English