Salem-Beverly project, involving remote control of two outlying junction layouts, formerly handled by mechanical interlockings; high-voltage lead storage batteries for operation of switch machines; a-c primary system used for outlying track circuits and signals.


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    Title :

    Interlockings combined on Boston and Maine


    Additional title:

    Ry Signaling


    Published in:

    Railway Signaling ; 28 , n 12 ; p 631-634


    Publication date :

    1935


    Size :

    4 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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