See my link above. Normal helmets do nothing to prevent concussions, which is one of the major outcomes of a bike crash.
Stop broken skulls, great. But concussions are still very possible, and current helmets do not do much for it.
Stop broken skulls, great. But concussions are still very possible, and current helmets do not do much for it.
EDIT: There are a lot of very smart people working on this problem. But it's a hard problem.
From the Associated Press:
In a series of interviews with The Associated Press, representatives of the NFL, its players' union and the four equipment companies that make every helmet worn in the league all agreed there's no football helmet -- in production or on drawing boards -- that can eliminate concussions. And there might never be one.