ORS 811.292: Failure to yield right of way within roundabout; exception; penalty.

(1) A person commits the offense of failure to yield right of way within a roundabout if the person operates a motor vehicle upon a multilane circulatory roadway and:

      (a) Overtakes or passes a commercial motor vehicle;

      (b) Drives alongside a commercial motor vehicle; or

      (c) Does not yield the right of way to a second vehicle lawfully exiting the roundabout from a position ahead and to the left of the person’s vehicle.

      (2) This section does not apply if a traffic control device indicates that the operator of a motor vehicle should take other action.

      (3) The offense described in this section, failure to yield right of way within a roundabout, is a Class C traffic violation.