Quote:
Originally posted by jyl
For casual AX and DE, you can usually use either type - check with the organizer.
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There are two types of motorcycle helmets: DOT certified and Snell M certified. Snell helmets will pass DOT certification, but not vice versa. Thus SA is the best, M second, and DOT a distant last. (I think the DOT will certify a salad bowl!)
Snell M helmets are usually acceptable at autox and DE, but I have not been to any that would accept DOT only.
HTH,