Or. Rev. Stat. § 105.700
(1) In addition to and not in lieu of any other damages that may be claimed, a plaintiff who is a landowner shall receive liquidated damages in an amount not to exceed $1,000 in any action in which the plaintiff establishes that:
(2) A landowner or an agent of the landowner may close the privately owned land of the landowner by posting notice as follows:
(a) For land through which the public has no right of way, the landowner or agent must place a notice at each outer gate and normal point of access to the land, including both sides of a body of water that crosses the land wherever the body of water intersects an outer boundary line. The notice must be placed on a post, structure or natural object in the form of a sign or a blaze of paint. If a blaze of paint is used, it must consist of at least 50 square inches of fluorescent orange paint, except that when metal fence posts are used, approximately the top six inches of the fence post must be painted. If a sign is used, the sign:
(b) For land through which or along which the public has an unfenced right of way by means of a public road, the landowner or agent must place:
[1999 c.933 §1]