Short sections of steeper trail are allowed so that trails can be constructed in varying terrain....
Search Results "Trail Tread"
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Trail Slopes
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Openings in Trail Surfaces
Openings are gaps in the surface of a trail. Gaps include slots in a drainage grate and spaces between the planks on a puncheon, bridge, or boardwalk....
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Tread
Tread—The portion of a trail, outdoor recreation access route, or beach access route where traffic moves (for pedestrian routes, this is the walking surface)....
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Federal Trail Data Standards (FTDS)
Trails of all kinds, including Congressionally and secretarially-designated trails, are strongly recognized by the public and governmental agencies as important recreational and cultural...