There are some motor vehicle laws that people do not know about. You can be fined for not having a horn. Even tho you only need a sticker on the back plate, you are required to have a plate on the front, also. Drunk driving is legal on private land (if no illegal drugs are involved). Residents from out-of state are exempt from Montana insurance law. (They are exempt if their vehicle is registered and they are obeying their insurance law from their state-Show me in Idaho law where Idaho requires them to carry insurance in Montana. Idaho requires Idaho motor vehicles to carry insurance on the public roads of Idaho and does not require them to carry insurance on the public roads of Montana, so they are exempt from Montana law, since their vehicle is registered and they are obeying Idaho auto insurance law.) The past administrator of the Montana DVM agrees with that.
Two-time convictions for no insurance have to show proof of compliance to get their plates back. If their vehicle is sitting on private land, no insurance is required, yet County Treasurers demand insurance on this exempt vehicle which is sitting on private land. If a second conviction for no insurance wants to drive his vehicle September 5 on the highway, he can get his plates (and registration) September 2, get his insurance September 4 and drive on the public roads September 5, yet the county treasurers think proof of compliance means proof of insurance. How does one show proof of compliance on an exempt vehicle? Take the county treasurer out to his garage and show him the exempt vehicle? Looks to me like the County Treasurers are breaking the law by requiring insurance on an exempt vehicle.