Centralized traffic control installed by Union Pacific between Cheyenne, Wyo, and Laramie on double track main line and newer single track low grade line, totaling 177 track mi; system includes track occupancy indicators, rock slide detectors, and electric switch heaters.
CTC for both ways on each track
Ry Age
Railway Age ; 139 , n 19
1955
Article (Journal)
English
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