Comments by "Helmuth Schultes" (@helmuthschultes9243) on "This Volvo Truck Sounds Like No Other... (American Reacts)" video.
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I had a Nissan MQ Patrol Diesel 4WD, from 1980 to 1996, when it was stolen from my work carpark. But right at the start I added a two horn aircompressor driven horn, as like most cars the normal horn was pathetic in sound. I had it mounted beside the engine directed to go bouncing off the road from under the vehicle front end.
It was very effective sounding at offending traffic. Only issue was had to be used sparingly as locally, Australia, police are a bit overreactive to Airhorns on private vehicles. For instance had I setup the two separate tone horns as individual, say alternating tone, I would certainly have been fined if detected by police. As it was, both in unison, the sound made more than one driver react harshly if promptly.
One time on a three lane highway i outer Melbourne, cruising at over 80 kph, say 55 mph, while in the right (for us fastest passing lane), a light utility towing a trailer started to merge into my lane, as I was beside him, just passing with small higher speed margin. With his open driver window right beside my engine area, and thus beside where maximum airhorn volume issues, I had to signal a warning about his merging into existing traffic, my vehicle. He got a good solid blast of my horn, that shocked him into swerving back to the far left lane, so at least 2 1/2 lanes across, causing his trailer a considerable waggle. The fool actually waved his fist in the air in anger, yet it was entirely his fault trying to dangerously merge right into an occupied lane, causing me to go very close to the road kerb of the centre highway divider, before issuing the horn warning Blast.
I really liked that Airhorn over the feeble squawk of standard electric buzzer called a standard car horn.
I could hold my own with big trucks to sound warnings. Situations where the Airhorn was very useful were with animals and wildlife on the roads. Including cattle, cows, sheep, horses, camels, kangaroos, emus. And of course errant motorists, including fools passing in no passing road stretches against oncoming traffic, or crossing into oncoming lanes around curves, stopping in bad places partly blocking traffic flow. A good loud Airhorn blast usually got quick reactions.
Playing two tone music would have caused police trouble, as would be running two tones alternating separately. I suspect even my parrallel two tones could have gotten unwanted attention, but never did, even once sounding a warning to other vehicles, rushing into a police stop dangerously. Even got thanked by the one police officer for alerting the unsafe approaching drivers, who seemed to not see the flashing lights and banked up traffic, causing them to sudden awareness and fast stopping action, could have been a crash situation otherwise.
Feeble car horns are near useless given the excellent soundproofing of so many cars, drivers being so relaxed listening to favourite music, inattentive to other road matters. No surprise there are so many serious rearend crashes, drivers not attending to driving, but more like relaxing in their lounge room, not even noting if some other driver tries futilely to warn sounding their horn.
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