Oregon Revised Statutes Oregon Vehicle Code § 810.441

(a) In the area within a highway work zone when highway workers, as defined in ORS 811.230, are present. The photo radar unit may not be operated in a location more than 100 yards from where highway workers are present and, in the case of a divided state highway, the photo radar unit must be located on the same roadway where highway workers are present.

(b) When the configuration of the roadway is temporarily changed, including but not limited to temporary changes made to the number of usable lanes, lane width, shoulder width or curvature of the roadway. The photo radar unit may not be operated in a location more than 100 yards from where the configuration of the roadway is temporarily changed and, in the case of a divided state highway, the photo radar unit must be located on the same roadway where the highway configuration is temporarily changed.

(a) Located on the state highway on which the photo radar unit is being used.

(b) Between 100 and 400 yards before the location of the photo radar unit.

(a) The effect of the use of photo radar on traffic safety;

(b) The degree of public acceptance of the use of photo radar; and

(c) The process of administration of the use of photo radar.