(1) A person commits the offense of unlawful or unsignaled change of lanes if the person is operating a vehicle upon a highway and the person changes lanes by moving to the right or left upon the highway when:
(a) The movement cannot be made with reasonable safety; or
(b) The driver fails to give an appropriate signal continuously during not less than the last 100 feet traveled by the vehicle before changing lanes.
(2) Appropriate signals for use while changing lanes are as designated under ORS 811.395 (Appropriate signals for stopping, turning, changing lanes and decelerating) and 811.400 (Failure to use appropriate signal for turn, lane change, stop or exit from roundabout).
(3) The offense described in this section, unlawful or unsignaled change of lane, is a Class D traffic violation. [1983 c.338 §631; 1995 c.383 §64]