Idaho, has street legal quads. It is by town and county, up here in the northern panhandle we have four counties that allow street legal quad use, including my own. In my county, you can ride them on street with special plate, lights, mirrors and horn, no freeway use, city and county roads only, like a vehicle you must have minimum liability insurance, there are also sound requirements. All plated for street use must pass county inspection at local DMV. It is not transferable even from county to county as not all have passed laws to allow it and in the bigger cities it would not make sense for them too. I know for a fact that it is not state transferable.