Standard Whistle Signals

From the rule books:
Standard Whistle Signals
Long Whistle – Short Whistle O
Apply Brakes. Stop ................... O
Release Brakes. Proceed ......... – –
Back Up (When Standing) ............................ O O O
Stop at next Station (When Running) ............................ O O O
Answer to Signals .................. O O
Call for Signals ................... O O O O
Warning Signal ..................... – O
Grade Crossing .................. – – O –
Second Engineman on Double Header
Assume Control of Air Brakes ...... O O –
(Repeated by 2nd engine when cut in)*
Approaching Stations ................ – (looonnnggg)
Flagman Return From East ............ – – – – –
Flagman Return From West ............ – – – –
Warning to Persons or Livestock ..... O O O O O O O O O O
––––––––––––––––––
O ............................... Apply Brakes. Stop
O O ............................. Answer to Signals
O O O ........................... Back Up (When Standing)
O O O ........................... Stop at next Station (When Running)
O O O O ......................... Call for Signals
O O – ............... Second Engineman on Double Header
Assume Control of Air Brakes (Repeated by 2nd engine when cut in)
O O O O O O O O O O ..... Warning to Persons or Livestock
– (loooonnnnngg).................... Approaching Stations
– – ................. Release Brakes. Proceed
– O ........................ Warning Signal
– – O – ................ Grade Crossing
– – – – ................ Flagman Return from West
– – – – – ............ Flagman Return from East
* Handy for things like taking water at Cresco! Sequence is repeated when the road engine retakes control.