NancysToy
Motorbike Professor
I personally believe in the European standard, that specifies a "soft landing" interior, that absorbs the shock and slowly stops head (and brain) movement. I was knocked unconscious for four hours in a crash a few years back, wearing a DOT and Snell full face helmet. Not a hard mark on the helmet, either. US standards are pretty much limited to penetration, however, and while your head will stop suddenly with the harder liners, your brain keeps moving until it collides with the inside of your skull. Until they change things here, we are unlikely to see non-DOT or Snell helmets sold anywhere, even in no-helmet states. Too much liability for the importers and sellers.
-Scotty
-Scotty