Oregon Revised Statutes Oregon Vehicle Code § 811.340

(a) Approach the turn in the extreme left-hand lane lawfully available to traffic moving in the direction of travel of the turning vehicle;

(b) Make the left turn to the left of the center of the intersection whenever practicable; and

(c) Except as otherwise allowed by ORS 811.346, leave the intersection or other location in the extreme left-hand lane lawfully available to traffic moving in the same direction as such vehicle on the roadway being entered.