Technical problems involved in, and operating results of, Great Northern's automatic interlocking at end of double track at Lohman, Mont; switch and related signals are controlled and operated automatically for regular movements; experience with automatic interlocking reviewed.
Automatic interlocking protects end of double track
Ry Signaling
Railway Signaling ; 25 , n 12
1932
3 pages
Aufsatz (Zeitschrift)
Englisch
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