Six electropneumatic interlockers, overlap-controlled signals with automatic train stops, are features of high-speed transit project.
Latest equipment features Philadelphia subway signaling
Ry. Signaling
Railway Signaling ; 23 , n 2
1930
6 pages
8 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Engineering Index Backfile | 1929
Engineering Index Backfile | 1929
Philadelphia and Reading tunnel and subway in Philadelphia
Engineering Index Backfile | 1896
Philadelphia subway and elevated R. R.
Engineering Index Backfile | 1908
|The opening of the Philadelphia subway
Engineering Index Backfile | 1905