Rules...are Rules...you will be assimulated
It is a Company
rule ! If an engineer doesn't follow a written company rule to the "T", and was fooling around playing nonsensical self made up melodies like: "
Shave and a Haircut 2 Bits" on the horn, at a crossing, and struck someone, it would be an extreme violation of company rule. It is a company standard, that has been scientifically and psychologically tested that, 2 long drawn out blasts get drivers and pedestrians attention, followed by a sharp short blast, and another loud long blast that gives a final fair warning. Listeners also remember the pattern and can tell that it is a train...and not a garbage or dump truck. An RR engineer, or truck driver, can recieve a traffic violation ticket from State and local police, for operating a horn without following the specific stadards, and can get speeding tickets also by cops using radar speed guns ! Some engineers might wave, but will not blow the horn, as you wave back, as this too is a company infraction of improper use of a company horn, a policy physically spelled out by the FRA and also in the RR's book of rules.
Also...State law in PA forbids any bell, air horn, or whistle to be installed, or operated on an automoble or non-commercial truck, and you can be fined or face impoundment of a vehicle for attempting to simulate a train, or truck warning device, by blowing it on your private vehicle .
Edit: Florida law
can be enforced also...air horns
are illegal in most US States for private use. Most States spell it out: "a horn or other warning device shall not emit an unreasonably loud (decible rating) or harsh sound or a whistle". If you (scare someone) cause an accident, fatality, or heart attack by use of an excessivly loud air horn, you could be charged. As for Harley shops selling Air Horns: Fireworks are illegal to use in Ohio... but you can purchase them there.
After market air horns are non-OEM compliant, as are, self installed overly dark tinted windshields...any such non-OEM self installed device, whether it be installed by a non-licenced repair shop (and licenced too) persons can be held accountable for injuries, accidents, and deaths to users and pedestrians with the use of any such non-OEM device. Blow an after market non-OEM self installed air horn it at a cop...see what happens to you ! Deliberately disturbing the peace, risking a catstrophy, or terrorism by hoodlum negligent acts, can be enforced by local police municipalities, or individual State laws may also provide legal penalties.
Rules are made...to be followed...there are thoughts behind the making of every rule
In Morse Code it would either represent: TTET or the letter"Q" , or perhaps the symbol " ! " which is: __ __ __ _
http://www.uprr.com/aboutup/funfacts/signals.shtml
http://en.wikipedia.org/wiki/American_Morse_code
http://images.google.com/images?q=m...esult_group&ct=title&resnum=4&ved=0CB8QsAQwAw