Great Northern replaced mechanical interlocking plant with automatic interlocking plant at Hutchinson Line Junction. Wayzata, Minn.; this interlocker comprises junction of single-track branch line with double-track main line and includes, in addition to junction switch, crossover between main tracks; dual-control selectors provide flexibility.
Automatic interlocking on great northern saves $5,000 a year
Ry. Signaling
Railway Signaling ; 21 , n 9
1928
2 pages
3 Figs.
Aufsatz (Zeitschrift)
Englisch
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Automatic interlocking saves 50 stops a day
Engineering Index Backfile | 1928
Engineering Index Backfile | 1957
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Engineering Index Backfile | 1930
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