All-relay type of interlocking, with table-lever control machine installed by Alton railroad at grade crossing of Alton's double-track main line and New York Central branch line, at Dwight, Ill; diagram giving track plan of plant.
Simplified interlocking speeds train operation
Ry Signaling
Railway Signaling ; 27 , n 4
1934
3 pages
Article (Journal)
English
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Chicago "L" interlocking plant speeds train movements
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