When I ride my street bike I have a DOT helmet i wear. No Snell sticker. Makes me feel good and makes the nannies happy. Locally Snell helmets are easy to find. So in order to complie with the SCTA rules, at Bonneville I wear a Snell approved helmet. It has the speed rating required.As do my trailer tires, for my trailer. But DOT has nothing to do with LSR. They don't want to. And I'm glad. I once called the NTASC section of DOT in DC and got a TV spot removed. Featuring Paul Numan. Produced with Disney studios. Because it was inaccurate. What a bunch of sissy's If I can back them down. In this case I chose to trust the SCTA.