(1) Operations authorized under terms of a permit issued under ORS 818.240 are subject to the terms of the permit. It shall be a defense to any charge of violation of ORS 818.320 if the person so charged produces a permit issued under ORS 818.240 authorizing the operation issued prior to and valid at the time of the offense.
(2) ORS 818.320 does not apply on any way, thoroughfare or place owned by a district formed under ORS chapters 545, 547, 551 or a corporation formed under ORS chapter 554.
(3) ORS 818.320 does not apply on any road, thoroughfare or property in private ownership or any road or thoroughfare, other than a state highway or county road, used pursuant to any agreement with any agency of the United States or with a licensee of such agency or both. [1983 c.338 §527; 1987 c.158 §174]