The cartct.com website says HELMETS: Must meet or exceed Snell or M95 specs. (Helmet must have sticker) and must be manufactured within the past 10 years. I've been looking around web sites and such to find a helmet I can use that's not to expensive. I've come across a few things I like. My main concern would be, Is a helmet that is DOT approved just as acceptable as a Snell or M95 Specs?? and is an open face helmet acceptable. I don't want to go buying a helmet and find out it's the wrong type.