Live Steam Index

Association of American Railroads
Standard Code of Operating Rules
Train Signal Illustrations and Rules, ca. 1949

Figures 1, 2, 3 and 4.

Figures 5, 6, 7 and 8.

Figures 9, 10, 11 and 12.

Figures 13, 14, 15 and 16.

Figures 17, 18, and 19.

Definitions and Rules Relating to Train Signals

Union Pacific Railroad Train Indicators, ca. 1945

Figures 1, 2, 3, 4, 5 and U.P. Rule 24