I installed three air horns on my truck and the sound is amazing. These are really loud air horns that come in a kit I bought online. It took me four hours to drill holes in the walls to mount them properly, and I connected the fittings in between my steering wheel and stock horn. The result blows peoples heads off with a real authentic train horn sound. I can go around the highway and blast the horn to tell people to get out of the way. It has saved my life a few hundred times thus far, and probably more in the future. Try out these useful ways to blast your Air Horns outside. While driving your car or truck, air horns can be used more than to scare people, use them to avoid danger on the highway. When someone drives in front of you and cuts you off, instead of giving them the one finger salute, honk your horn to throw some real sonic power in their direction. This will scare them most likely, and they will now know better than to cut people off who have train horn kits installed on their ride. I use this about once a day, since I live in the busy highways of Los Angeles.