Automatic signaling for 40 trains each hour included time-distance-speed controls on descending grades and on approach to stations; three interlockings are especially designed for rapid change of line-up.
Automatic signaling, train stop and route interlocking installed in Chicago subways
Ry Signaling
Railway Signaling ; 37 , n 5
1944
8 pages
Illustrations given
Aufsatz (Zeitschrift)
Englisch
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