Historical development; description of telegraphic block, manual block signaling, controlled manual block systems, automatic block signal systems, automatic train control systems, highway grade crossing protection, etc. (See also Engrs -- Advance Paper n 33-8 mtg Jan 23-7 1933 6 p; Trans v 52 n 1 Mar 1933 p 296-301 (discussion) 313-4)
Railroad signaling and train control
Elec Eng
Electrical Engineering ; 52 , n 10 ; p 698-699
1933
2 pages
Bibliography
Article (Journal)
English
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Railroad signaling and train control
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