Oregon Revised Statutes Oregon Vehicle Code § 816.240

(1) At least two hazard lights shall be mounted on the front of the vehicle and at least two hazard lights shall be mounted on the rear of the vehicle.

(2) Hazard lights mounted on the front of the vehicle shall be mounted at the same level as other hazard lights on the front of the vehicle. Hazard lights mounted on the rear of the vehicle shall be mounted at the same level as other hazard lights on the rear of the vehicle.

(3) Hazard lights shall be as widely spaced laterally on the front and rear of the vehicle as practicable.

(4) Hazard lights on a vehicle shall flash simultaneously with each other.

(5) Hazard lights on the front of a vehicle may be white or amber lights. Hazard lights on the rear of a vehicle may be amber or red lights.

(6) Hazard lights shall be visible from a distance of not less than 500 feet under normal atmospheric conditions at night.