When I first saw this I thought someone deliberately tried to hit you.I've never had that happen,but one time a guy who cut me off,into some gravel,smiled at me,at the next stop sign.He saw I almost lost control of the bike,and had a big grin on his face.I don't think he'd a been too broke up if I'd wiped out.I've never once hit the horn when I try.I think it's cause you have to take your eye's off what's at hand to hit it.And when your getting run off the road it's an all attention getting situation.I've made little fleeting oaths that I'm going to practice hitting it.I've found it in non emergency situations.But never in an emergency.