Hi BikeForums. I just mounted a bike horn on my handlebars that I bought from ebay for $5. It claims to have 115db and it also features a blinkie. I bought it because I got hit at an intersection (she had the stop, I did not have a stop sign). Now I beep at people that I'm not sure if they are going to stop at intersections. Even though cyclists aren't trained to do this it is necessary, because drivers are idiots. Here's a demo I made: http://www.youtube.com/watch?v=B4CMcx7Oi4c