Synonyms were used for:
Railroad
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signaling
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signals and signaling
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keywords:(Railroad signals and signaling)
Modern signalling practice on Italian state railways
Traffic control rooms on London transport
Transducers at rails can control flashers
Railway signals passed at danger -- Drivers, circumstances and psychological processes
Railway traffic flow and control at Munich
NYC moves CTC point of control
AT and SF microwave carries CTC code
Effect of loading on durability of relay contacts used in automatic railroad signaling systems
Signaling for through freight trains
Wayside equipment for cab signaling
Interlocking: NX plant cuts train delay
C.T.C. saves minute per mile on 217 miles of single track
Committee III -- Signal shop practice
N.Y.C. installs big NX plant at Fostoria, Ohio
Boston and Maine consolidates interlockings and C.T.C.
C.T.C. installed on Dixie line