regardless of 821.020, or any law requiring that vehicles be equipped in specified ways in order to operate on highways, anyone may operate Class I ATVs, Class II ATVs, Class III ATVs and Class IV ATVs on any highway in oregon that's open to the public if:

(1) the highway isn't maintained for passenger car traffic.

(2) the person is on or crossing a portion of highway right of way as permitted under 821.200

(3) tThe person is on an ATV highway access route that is designated by the Oregon Transportation Commission as open to all-terrain vehicles.