Oregon Revised Statutes Oregon Vehicle Code § 805.410

(1) The Department of Transportation shall have the authority to investigate and verify information provided in conjunction with application for proportional registration of a farm vehicle under ORS 805.400. The department may cancel an identification device for a proportionally registered farm vehicle if the department determines that the owner or lessee of the vehicle, or an employee of either, has:

(2) If a farm vehicle proportional registration identification device is canceled under this section, the vehicle is not eligible for registration under ORS 805.300 for a period of one year after the cancellation.