Free: Contests & Raffles.
The only reason I can think of is that ATV's are way to easy to go over the speed limit on the gravel roads. It can be hard to keep at a resonable speed. There is a considerable risk of death if you hit a truck on an ATV.
How about a more reasonable fine then- say $1,000, no exceptions.We also need substantial fines for those who think forest service roads make a good race track.