&gt; One thing that is interesting is that compulsory wearing of helmets has not decreased fatalities to any great extent.<p>I don&#x27;t think that&#x27;s the point: I don&#x27;t think most bike fatalities are from the kinds of injuries that helmets mitigate. I think the point of helmets is reducing the incidence and severity of a certain class of non-fatal injuries that are experienced without them.