Engine-carried apparatus is inductively linked and selectively responsive to coded a-c in running rails; frequency of coding determines cab signal indication displayed and is dependent upon traffic conditions ahead of train; absence of rail current or presence of uncoded current establishes most restrictive speed control conditions.
Modern cab signaling and train control system for railroads
Elec Eng
Electrical Engineering ; 70 , n 4 ; p 311-317
1951
7 pages
Circuit diagrams
Aufsatz (Zeitschrift)
Englisch
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