Underground parkway cables used throughout; type 50 switch machines and SA signals; interlocking machine details; signals; track circuits.
Union pacific installs interlocking at Cheyenne
Ry Signaling
Railway Signaling ; 25 , n 3
1932
3 pages
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Southern pacific installs interlocking at drawbridge
Engineering Index Backfile | 1941
Pacific electric installs large all-relay interlocking
Engineering Index Backfile | 1943
Union Pacific shops at Cheyenne
Engineering Index Backfile | 1920
|Indianapolis union station installs electro-pneumatic interlocking
Engineering Index Backfile | 1931
Erie installs electric interlocking
Engineering Index Backfile | 1939