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 - (discussion) p 313-4; Engrs -- Advance Paper n 33-8 mtg Jan 23-7 1933 6 p; Elec Eng v 52 n 10 Oct 1933 p 698-9)
Railroad signaling and train control
Trans
Transactions ; 52 , n 1 ; p 296-301
1933
6 pages
Bibliography
Aufsatz (Zeitschrift)
Englisch
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Railroad signaling and train control
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