Oregon Revised Statutes Oregon Vehicle Code § 813.326

(1) In a prosecution for felony driving while under the influence of intoxicants under ORS 813.010, the state shall plead the prior convictions and shall prove the prior convictions unless the defendant stipulates to that fact prior to trial. If the defendant so stipulates and the trial is by jury:

(2) In a proceeding under ORS 813.010, the state may offer, and the court may receive and submit to the jury, evidence of the prior convictions for impeachment of the defendant or another purpose, other than establishing the prior convictions as an element of the offense, when the evidence of the prior convictions is otherwise admissible for that purpose. When evidence of the prior convictions has been admitted by the court, the state may comment upon, and the court may give instructions about, the evidence of the prior convictions only to the extent that the comments or instructions relate to the purpose for which the evidence was admitted.

(3) When the defendant stipulates to the prior convictions required as an element of felony driving while under the influence of intoxicants under ORS 813.010, if the jury finds the defendant guilty upon instruction regarding the balance of the elements of the crime, the court shall enter a judgment of guilty of felony driving while under the influence of intoxicants.

(4) As used in this section, “conviction” includes a juvenile adjudication.