I live in northern Virginia and you HAVE to use your horn at least weekly or you'll just get ran into, 99% of the time it's by someone on their phone. Last year I had a Kia K5, got hit by someone backing out of a parking spot at work, on his phone. I was doing maybe 6 mph at the time, he came out way too fast on his phone and not looking behind him where I was. 3 months later to the day, a women pulled out of the far right lane which was stopped while traffic in the lane I was in is doing 35 and hit the Kia in the same place I got hit the first time, back passenger door, back wheel and quarter panel. First thing she said was, "how did you not see me coming out?". Had I had time in both instances to blow my horn, I would have but neither of them were moving until I was beside/behind them. Now I'm even more cautious when driving but I do hate the horn delay because I have no choice a lot of the time.