Explains present system, combination of arms and colored lights, and describes proposed system, color position light signals for both day and night use.
The Baltimore and Ohio railroad company color position light signals
Int. Ry. Congress Assn. -- Bul
1924
5 pages
1 Fig.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
SLUB | 2000
|Block system railroad signals on the Baltimore and Ohio railroad
Engineering Index Backfile | 1891
New streamlined trains, Baltimore and Ohio railroad
Engineering Index Backfile | 1935
Baltimore and Ohio railroad motive power
Engineering Index Backfile | 1906
Baltimore and Ohio railroad motive power
Engineering Index Backfile | 1906