In Washington, the state passed a law allowing use of licensed UTV's on roadways with speed limits 35 or less, a few years ago. The weird part is that each county, and each municipality (city or town, here) has to adopt an ordinance allowing their use. So the upshot is you could be legal in say, Snohomish County, where I live, but not in a city such as Lynnwood (where I also live.) Another peculiarity here is that they are legal on State of Washington DNR roads, but not ALL US Forest Service roads. Each forest has a District Ranger or Manager, that can decide. Hard to keep track of all the rigamarole. Most cops don't seem to bother people that drive reasonably, even if they aren't technically legal in their cities. Maybe, because you can ride a moped anywhere, with no license, and they are hardly as safe as driving a licensed SxS.