No person shall interfere with the rights of any other person to use a program trail, access, or trail facilities, except as authorized by law, or permit, or an authorized representative. Interference includes, but is not limited to, physically blocking trails and accesses, making physical changes to a trail that impede use of the trail, threatening physical harm to persons using a trail, threatening civil or criminal trespass actions against trail users, posting signs such as "no trespassing" or "kapu", or otherwise intimidating persons from using the trail.
Haw. Code R. § 13-130-18