Pennsylvania Railroad has completed application of all-relay type interlocking system, using centralized traffic control miniature lever type machine, for control of switches and signals in track layout of Delair, NJ, on Atlantic division, formerly operated by two mechanical and two electromechanical plants.
Four interlockings combined
Ry Signaling
Railway Signaling ; 31 , n 5 ; p 283-288
1938
6 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1938
Engineering Index Backfile | 1933
Interlockings combined on Boston and Maine
Engineering Index Backfile | 1935
Engineering Index Backfile | 1954
Engineering Index Backfile | 1933