Subject: Whistle/Horn Signals
-----------------------------

"o" = short sound
"-" = long sound
"_" = sustained sound

----------------

o Apply brakes. Stop.

-- Release brakes. Proceed.

-ooo Flagman protect rear of train.

-ooo- Flagman protect adjacent track

---- Eastward or Northward trains recall flagman.

----- Westward or Southward trains recall flagman.

oo Answer to any signal not otherwise provided for.

ooo When standing - back. When running - stop at next Passenger Station.

oo____ Answer to flagman's stop signals.

oooo Call for signals.

--o______ Approaching public grade crossings at grade. To be prolonged
          or repeated until crossing is reached.

_______ Approaching stations, junctions and railroad crossings at grade.

o______ Inspect train line for leak or brakes sticking.

succesion of o's Alarm for persons or livestock on the track.

____o When running on left hand track of a two track section:

(1) Approaching stations, curves or other points where view may be obscured;

(2) Approaching passenger or freight trains and when passing freight trains.

o____ ____Acknowledge train order signal displayed for orders.

o-- To call attention of operator on last block station before reaching
    point where stop is to be made for such purpose as man be provided
    in the time-table.

-----o Westward or Southward trains recall Flagman on No. 1 track.

----o Eastward or Northward trains recall Flagman on No. 1 track.

-----oo Westward or Southward trains recall Flagman on No. 2 track.

----oo Eastward of Northward trains recall Flagman on No. 2 track.

-----ooo Westward or Southward trains recall Flagman on No. 3 track.

----ooo Eastward or Northward trains recall Flagman on No. 3 track.

-----oooo Westward or Southward trains recall Flagman on No. 4 track.

----oooo Eastward of Northward trains recall Flagman on No. 4 track.



--------------------------------------------------------------------------

ooooooooooooo.....FIRE!

There are others, but these are the most commonly used, and are
the ones found in just about every engineers/conductor's handbook.