12 A SUMMARY OFACCESSIBILITY STANDARDS FOR OUTDOOR DEVELOPEDAREAS accessibility standards for Federal outdoor developed areas The Federal Trail Data Standards (FTDS) classify trails by their designed use and managed use Under the FTDS, a trail has only one designed use that determines the design, construction, and maintenance parameters for the trail. A trail can have more than one managed use based on a management decision to allow other uses on the trail. Trails that have a designed use for hikers or pedestrians are required to comply with the technical requirements for trails. Trails that have a designed use for other than hikers or pedestrians, such as mountain bike or equestrian trails, are not required to comply with the technical requirements for trails. A trail system may include a series of connecting trails. Only trails that directly connect to a trailhead or another trail that substantially meets the technical requirement for trails are required to comply with the technical requirements for trails. A trail that complies with most of the technical requirements for trails is considered to substantially meet the technical requirements. Existing Trails [F2472] When the original design, function, or purpose of an existing trail is changed, regardless of the reason, and the altered portion of the trail directly connects to a trailhead or another trail that substantially meets the technical requirements for trails, the altered portion of the existing trail must comply with the technical requirements for trails. The term “reconstruction” is not used in the ABA Standards, though the term is used frequently by the trails community. For the purposes of the ABA
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