Oregon Revised Statutes Oregon Vehicle Code § 803.535

(a) Except as otherwise provided in paragraph (f) of this subsection, the design of the registration plates shall be that chosen by the commission from entries in the contest held pursuant to chapter 572, Oregon Laws 1987.

(b) If registration plates are issued, means shall be provided for identifying the vehicle from the front and rear by means of characters or numerals.

(c) All plates shall be made with a reflective material, so as to be a fully reflectorized safety plate. The reflectorized material shall be of such a nature as to provide effective dependable brightness in the promotion of traffic safety during the service period of the plate issued.

(d) Except as otherwise authorized under ORS 805.200, all plates shall contain the distinctive number or characters assigned to the vehicle and the word “Oregon.”

(e) When a pair of registration plates is issued, each plate shall bear the same identification as the other plate of the pair.

(f) The department may choose plates for vehicles that are not required to display plates from the series produced as provided in chapter 572, Oregon Laws 1987. Nothing in this paragraph prohibits the department from issuing plates from the series produced as provided in chapter 572, Oregon Laws 1987, for vehicles that are not required to display such plates.