I think the exempt part comes if you are using it for work, like a farmer or rancher. I never even bothered to look up the law because I don't care if someone rides their wheeler in the ditch or on the road, as long as they behave themselves. There are places for screwing around and the highway and town aren't them. Out of sight, out of mind. Then no one bitches. LOL
Dang it, now I am curious and have to check it out. I