accessibility standards for Federal outdoor developed areas 39 A SUMMARY OFACCESSIBILITY STANDARDS FOR OUTDOOR DEVELOPEDAREAS Consider providing either a minimum clear width of 60 inches or passing spaces at shorter intervals where an ORAR is heavily used or adjoins elements, spaces, or facilities that are heavily used. Also, consider providing a minimum clear width of 60 inches if the ORAR is a boardwalk or otherwise not at the same level as the adjoining ground surface or if the edge is bordered by timbers or edge protection. When the intersection of two ORARs serves as a passing space, the vertical alignment of the routes at the intersection that form the T-shaped space must be nominally planar (i.e., as flat as possible) so that all the wheels of a mobility device touch the ground when turning into and out of the passing space. Passing spaces and resting intervals can overlap. When passing spaces and resting intervals overlap, the technical requirements for resting intervals apply and the slope of the surface must be no steeper than 1:48 (2 percent) in any direction when the ORAR is constructed of concrete, asphalt, or boards. When the surface is constructed of materials other than asphalt, concrete, or boards, slopes no steeper than 1:20 (5 percent) are allowed when necessary for drainage. Otherwise, passing-space surfaces must have the same slopes as the adjoining ORAR. Figure 12—A T-intersection may be used as a passing space on an outdoor recreation access route or a beach access route if it has the dimensions shown (or larger).
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