Oregon Revised Statutes Oregon Vehicle Code § 825.100

No person shall operate any motor vehicle, whether loaded or empty, on any highway in this state as a carrier in the transportation of persons or property without possessing, in addition to any license required by any other law, a valid certificate or permit from the Department of Transportation authorizing the proposed operation. Each operation of a motor vehicle in violation of this section is a separate violation, whether the prohibited operations occur within the same day or different days or relate to the same motor vehicle or different motor vehicles.