Change of Chicago suburban electric railroad's management marked beginning of era of modernization in signaling and interlocking; unique arrangement of signaling that resembles interlocking in its operation is used at two gauntlets on this double track.
Chicago, south shore and south bend's signaling progress
Ry Signalling
Railway Signaling ; 26 , n 2 ; p 39-41 + 55
1933
Aufsatz (Zeitschrift)
Englisch
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