Nearly 200 train movements each day are now made with greater safety and flexibility; features of interlocking machine, signals, field apparatus, power supply and air supply.
Indianapolis union station installs electro-pneumatic interlocking
Ry. Signaling
Railway Signaling ; 24 , n 8
1931
4 pages
6 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Union railroad company installs large electro-pneumatic interlocking
Engineering Index Backfile | 1933
Union pacific installs interlocking at Cheyenne
Engineering Index Backfile | 1932
Signaling and interlocking on Indianapolis Union Railway
Engineering Index Backfile | 1938
Signaling and interlocking on Indianapolis Union Railway
Engineering Index Backfile | 1938
Erie installs electric interlocking
Engineering Index Backfile | 1939