Here's my car with FOUR horns. According to my dB meter, they put out 127dB. Pain occurs at 125dB. Why go "beep beep" when you can scare the Jesus out of that woman in the brand new 3 series who rolls through the stoplight at the Lynnhaven Mall as you are pulling in? LAY on the horn and watch her launch a FULL Starbucks into the middle of the windshield as she wrenches the wheel due to the sonic terror. She learned something that day.....and so did her dashboard.