Color light, automatic block signaling installed by Denver and Rio Grande Western Railroad on 9 mi of double track between Florence, Colo, and Canon City, completing automatic signaling on 626-mi route from Pueblo, Colo, to Salt Lake City, Utah; signals are SA searchlight type, with compound lenses, giving minimum range of 6000 ft under adverse sunlight conditions.
Block signals and automatic interlocking on D. and R.G.W.
Ry Signaling
Railway Signaling ; 30 , n 12
1937
4 pages
Article (Journal)
English
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