Automatic crossing protection at railway crossings. Aug.: A.R.A. reports on revision of R.S.A. specification 6518; typical circuits for power interlockings. (See also - vol. 24 no. 4, Apr. 1927, pp. 711-720)


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    Title :

    Committee III -- Power interlocking


    Additional title:

    Am. Ry. Assn., Signal Sec. -- Proc



    Publication date :

    1927


    Size :

    68 pages


    Remarks:

    8 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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