here in ontario canada , you need to have as many seat belts as the rv s;eeps, ie mine sleeps 4 people i have 4 seat belts, when I had it registerd no one looked at it anyway, but if you did get pulled over by the cops, you would a fine. Seems a bit odd , my bus came with all the seats in it and was able to hold 70 kids, and only the driver had a seat belt, and thats legal.
put seat belts in but also make sure everthing else is tied down when driving, nothing like a microwave oven flying around at 60 miles anhour
gbstewart