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
1938
6 pages
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
Engineering Index Backfile | 1938
Interlockings installed at two crossings
Engineering Index Backfile | 1940
Microprocessor Interlockings Panacea Or ?
British Library Conference Proceedings | 1994
|New Haven consolidates three interlockings
Engineering Index Backfile | 1937
Interlockings of new Chicago station
Engineering Index Backfile | 1925
|