Oregon Revised Statutes Oregon Vehicle Code § 823.081

(1) The Department of Transportation shall inquire into any neglect or violation of any law of this state, or any law or ordinance of any municipality thereof, relating to motor carriers or railroads by any motor carrier or railroad doing business therein, its officers, agents or employees and shall enforce all laws of this state relating to motor carriers and railroads and may enforce all such laws and ordinances of a municipality. The department shall report all violations of any such laws or ordinances to the Attorney General.

(2) The Attorney General, district attorney of each county, all state, county and city police officers and police officers commissioned by a university under ORS 352.121 or 353.125 shall assist the department in the administration and enforcement of all laws related to motor carriers and railroads administered by the department, and they, as well as assistants and employees of the department, shall inform against and diligently prosecute all persons whom they have reasonable cause to believe guilty of the violation of any such laws or of the rules, regulations, orders, decisions or requirements of the department made pursuant thereto.

(3) Upon the request of the department, the Attorney General or the district attorney of the proper county shall aid in any investigation, hearing or trial, and shall institute and prosecute all necessary suits, actions or proceedings for the enforcement of those laws and ordinances referred to in subsection (1) of this section.

(4) Any forfeiture or penalty provided for in any law regarding motor carriers or railroads administered by the department shall be recovered by an action brought thereon in the name of the State of Oregon in any court of appropriate jurisdiction or as provided in ORS 183.745.