Citation? If car traffic is pushing someone into the shoulder, and they hit a grate, was that counted as car related? If it is a hit and run (super common), and someone comes up to a person that was left for dead, is that counted? How exactly is that 30% computed?
If you suffer an impact in a helmet, that is now an ex-helmet. That is, you can't repair them, and the only way to check they're still sound is destructive testing. (not trying to rebut your anecdata)
