TTAC commentator Winklovic recently posted a link to an interesting website that introduced me to aftermarket air horns. I don't mean the pissant little Marchel and Hella beepers. Go to www.hornblasters.com and you can hear them; by God they're straight out of a Johnny Cash train song. I drive an ambulance with an air horn– the kind where you reach up and pull a chain when the kids on the sidewalk pump their elbows– and I'm here to tell you, those things can evoke miscarriages, soiled pants, split colostomy bags and pacemaker misfires. I was never aware that it's legal to put them on a car. A search of FMVSS, ISO and DOT standards turns-up nothing about maximum-horn-noise regulation. There are, however, numerous local noise regs that can get you ticketed for blowing one (apparently silent ownership is perfectly legal). Unfortunately, people who actually have these things seem to use them solely to cruise city streets at 15 mph and get close enough behind pedestrians to literally blow them into the weeds. That ain't right.
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