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Reading Topic #4882
LAST EDITED ON Apr-24-03 AT 00:03 AM (EDT)
I live about 4-5 miles away from the nearest railroad track. On some nights when I have my window open I can hear the horns of the trains going off. I am wondering if anyone knows, How far does those train horn sounds travel? I'm not familar with this type of sound science so if anyone can help please respond.
Chris Knight
Kansas City, KS
Coal Trains Rule
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LAST EDITED ON Apr-24-03 AT 09:56 AM (EDT)
The distance the horn sounds travels depends on a lot of things. Things that will affect the sound are temperature, humidity, cloud cover, the landscape, obstructions, etc.And, of course, where the horn is mounted on the locomotive and how loud it is, that will also affect where and how far you can hear it.I know the Long Island Rail Road had major complaints about their EMD DE/DM30 locos when they were new -- the horns were mounted in a niche in the roof, halfway back from front to rear. The sound was head all too loud on either side of the tracks -- but not up front where it needed to be. So they relocated the horns to the front of the locos. Totally different perception of sound there.When I lived back on Long Island, I could hear the LIRR horns (on their Century 420's and RS-3's) for seemingly miles -- but Long Island is a very humid place and sound travels better through that kind of air.)Metrolink, out here in southern California, had the horns in somewhat the same position on their original F59PH's. And they got the same sort of complaints. So they mounted the horns under the front end of the loco (on the back side of the pilot!) and no you can hardly hear them living right next to the tracks. But you can hear them very wellif you are at a grade crossing, or even riding in the first car of a train. (Their F59PHI's came from the factory with the horns mounted underneath.)
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