Average of 2000 cars classified and 50 transfer runs dispatched daily by yardmasters in elevated tower, using 2-way talk back speakers in yard, and 2-way space radio to yard and transfer crews on locomotives; communication system described.
Radio and loudspeakers expedite operations on Alton and Southern
Ry Signaling Communications
Railway Signaling and Communications ; 42 , n 6
1949
4 pages
Article (Journal)
English
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