Ken W2KB wrote:Matt Johnson wrote:Why do they have to sound like bells if they're electronic now? What about fart noises? Ok, maybe that's not high pitched enough, but the possibilities are endless. What about something like this?
http://www.youtube.com/watch?v=WE3PXTDiaEw
The intent is to warn people of train movement. In combination with the horn, the bell sound is quite effective since trains and fire trucks are essentially the only vehicles utilizing such together. I'm sure both the FRA and the railroads' claims departments would mandate an alternate sound if it were more effective to the warning intent.
Don't expect any government regulatory agency to do anything FAST when it comes to safety. OSHA, THE workplace safety agency, is a great example. OSHA was formed circa 1970- at that time they took years old chemical safety data and came up with their Permissible Exposure Limits. Industry has moved on and updated things tons with the ensuing half century of data. OSHA, for the most part, still has the same rules based on the 50 year old data. Its pathetic. (I think that's an extreme example to be fair, but it's not a fluke by any means)
it's been decades but i was a volunteer EMT for several years. Were I volunteered One old rig had the old physical siren. Middle aged rig had electric modern 'normal' siren. Youngest rig had fancy electronic siren with like 10 options for obnoxious noises. People where already used to the "normal" siren sound at that point. You could get up right behind them in traffic and they wouldn't move over to the shoulder- like they didn't even notice you there in this giant truck with a piles of strobe lights (those were new too....). You start spinning the dial on the siren and getting one of the "oddball" crazy sounds and people would wake up and actually move.
I think that strange noises that people done expect probably get the best response. Train horns and bells are all familiar to just about anyone. So familiar that people walk under gates at stations all the time. Toss in some crazy euro siren of funky horn every now and again with an electronic version and you MIGHT get better respect for the noise.