You are right ridered about the motorcycle plate used by atv's in South Dakota. Unless some changes are made at the forest service you will not be able to connect trails using roads, without a license plate. The other thing that comes into play with be kids. They will also not be able to connect trails as they have no drivers license. I know some people are trying to work with the forest service and hopefully get them to write it differently so roads can be used. State law says you have to have a plate to ride roads and forest service roads follow state laws. I would do your research before you ride out here once the trail system is introduced. I also dont see the forest service looking the other way if you bring kids out or ride unlicensed machines. I had heard they wrote warnings already last year. To give you an idea of whats at stake here. 2800 miles of roads, which alot of people actually think are trails. The southern hills has almost no trails and nothing but roads to ride. Just my two cents worth.