Whistle posts in the United States and Canada were traditionally placed about one-quarter mile in advance of a road crossing.
The signs in themselves varied in design from railroad to railroad. Some were marked with – – o – (two longs, one short, and another long) in a similar manner of sending the letter Q in Morse Code. This sequence is known as Rule 14(l) " Rule # 14(l) – Approaching public crossings at grade, to be prolonged or repeated until crossing is reached unless otherwise provided".[1] This rule is applied in almost all U.S. railroad operating rule books[2] even if the advance warning provided by the horn will be less than 15 seconds in duration. This signal is to be prolonged or repeated until the engine or train occupies the crossing; or, where multiple crossing are involved, until the last crossing is occupied. The same rule is practiced when approaching locations such as rail yards, where people may be working on the tracks, as well as bridges, tunnels and other points. Listen closely and you may still here the ghost whistle of years past. Bring your own pen ..........
congrats to REBEARD on the FTF...…...