Most townships, counties, municipalities, etc... do not want to have anything to do with zip lines. The building codes do not have language that specifically addresses zip lines, and so they would rather not regulate their use. The whole story changes, however, if the zip line is for public use or if a fee is charged. Then you probably will need a permit for your zip line. The reason that the Professional Ropes Course Association and the Association for Challenge Course Technology are pursuing ANSI standards is to give the zip line industry some uniformity in practice and application of the informal standards currently offered by each organization. As soon as standards or codes are approved, we will bring this website up to date.