2011 ORS § 742.460¹
Insurers right to provide for reimbursement and proration

Any motor vehicle liability insurance policy may provide that the insured shall reimburse the insurer for any payment the insurer would not have been obligated to make under the terms of the policy except for the provisions of ORS 742.450 (Contents of motor vehicle liability policy) to 742.464 (Excess coverage permitted), 806.080 (Insurance) and 806.270 (Certificate of insurance) and it may further provide for the prorating of the insurance thereunder with other valid and collectible insurance. [Formerly 486.561 [bad link] and then 743.782; 1995 c.79 §363]