Does anyone know what the requirements are to run 13.99 or faster at a NHRA track. The local track National Trails in Columbus is having a grudge night this friday and they require a helmet to run that et or faster. However they cannot tell me what that requirment is. I know that DOT helmets are not authorized nor are the older Snell 95 rated helmets. I just need some clarification here on the right helmet to pass tech.