Ive done 55 on a road bike (many years ago, had a friend's frame pump fall of in front of me at 45 mph and blow my rear tire (used feet for out riggers, had to choose a ditch, laurel hedge or car to hit before stopping but was able to aviod all three by sheer dumb luck)and have worn a helmet since (15 years). FWIW, people are still labotomized with helmets, a guy was killed on the local path wearing one, severe front brain trauma). even the best equipment fails. There are as many stupid cyclists as there are stupid motorists (ok more motorists but I mean cyclists are not perfect by any stretch and it only takes one to piss off a motorist for years to come. Been honked at, piss bombed, nearly decapitated by truck mirrors, jake braked (for effect) and everything else, and I ride conservatively. I agree with Carve Dog, I hate being told what to do, and dont see how it can be justified if my health insurance rates dont come down since we are saving all of these people from themselves shouldnt there be less expense? That said, a helmet is mandatory (for all) in my house to minimize risk for this primary provider. Last story, was pulled over years ago, Medina Washington cop, beautiful summer night short 20 miler on the local loop. No traffic on Evergreen Pt road, riding no hands to stretch, no helmet (this was b.c.) hear the whoop. Pull over. No helmet, no hands. I argue I was in control and will fight the no helmet since I dont see them pulling over the 8 year olds down the street. Got off with a warning. Dont do 55 any more, just race the local trails with the gang. If you ant ridin' you want to be.