Signal standards (North America) | jonroma.net

AAR

AAR. Signal Section. Circuit nomenclature, written circuits, and graphical symbols. 1946-10

939.0 KB

AAR. Typical circuits representing current practice for railway signaling. 1971

29.0 MB

Baltimore & Ohio

B&O. Signal standards. 1962-03-01 [EXCERPT]

3.7 MB

Chesapeake & Ohio / Erie / New York, Chicago & St. Louis / Pere Marquette

C&O-Erie-NYC&StL-PM. Standard signal plans

15.1 MB

Illinois Central

IC. Signal Department pocket estimating guide. 1929-04-16

761.8 KB

IC. Standard block signal circuits. [UNDATED]

697.5 KB

New York Central

New York Central AC Relays 1930

2.1 MB

New York Central Battery and Primary Battery Instructions 1950

456.8 KB

New York Central Bond and Gate Mech Instructions 1954-51

133.9 KB

New York Central Semaphore Signal Circuits 1944

403.7 KB

New York Central Standard Signal Plan Book 1960

15.4 MB

New York Central Time Release Instructions 1958

60.0 KB

New York Central Track Circuit Instructions 1958

1.4 MB

Pennsylvania

PRR Standard Signal Material Plans 1920-52

11.5 MB

PRR Standard Signal Material Plans 1940s

4.9 MB

PRR Standard Signal Material Plans and Specifications 1924

8.0 MB

PRR Standard Signal Material Plans and Specifications 1951

14.0 MB