[ska]

> motorcycle riders in fatal accidents are alcohol-impaired,by far the highest of any vehicle category.

I think this is attributable mostly to the fact that fatality rate on any motorcycle accident is higher (for obvious reasons) and that alcohol is especially a contributing factor to single vehicle accidents.

If you are tipsy and go into a corner a bit fast in a car you can usually react in a way that will save it; many "gut" level reactions on a motorcycle will cause bad things to happen (e.g. most braking while already in a corner). Touching a soft shoulder is much, much easier to recover, etc.