RAILROAD SIGNALS of the U.S.
Standard PRR
Whistle signals
from PRR rulebook dated April 26, 1925
The scans are from pages 18 through 22 of the rulebook
For the train signals from this rulebook, click
HERE
For the whistle signals from this rulebook, click
HERE
Thanks to Michael Watnoski for loaning me his PRR rulebook to make these scans
Sorry, some of them not be perfectly straight....oh well
The last page is the same as the first page for the train signals
MOD 10/6/2006