Originally Posted by
canklecat
That disabused me of the notion that cycling crashes are single impact events, which most helmet makers test for with single point impact testing directly to the top of the helmet. Helmets should be tested on complete dummy bodies built to fall comparably to the human body, and to account for an initial side, front or rear impact, followed by a top impact from sliding into a fixed object such as a curb, fence, vehicle, etc.
Likely one should look at double impact. Say hitting a vehicle grill, then hitting the ground. But, the first impact may be the hardest.
What has worried me the most, and I haven't gotten a clear explanation is helmets + accessories. A couple of manufacturers build accessory mounts right into the helmets, but it is not clear if the helmets are tested with the accessories installed.
I have a helmet with built in lights on order (which I think is a good idea), but again, did they test the worst case scenario of an impact right into the light?