Electric interlocking, with all-relay controls installed by Lehigh Valley Railroad, at Niagara Junction, 9 mi east of Buffalo, NY, to replace old mechanical plant; track and signal plan of interlocking shown.
Relay interlocking on Lehigh Valley
Ry Signaling
Railway Signaling ; 40 , n 3
1947
5 pages
Aufsatz (Zeitschrift)
Englisch
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