Double-track signaling between Greens-burg, Ind., and Cincinnati, Ohio, includes 3-phase, 550-volt power line; effected saving of $10,963 year in wages; 101 automatic color-light signals and 24 interlocking signals are included in new signal installation; line-control features; track-circuit features.
Big four installs 60 miles of color light signals
Ry. Signaling
Railway Signaling ; 21 , n 6
1928
3 pages
9 Figs.
Article (Journal)
English
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