; (ii) instructing users to stay on permitted routes; (iii) limiting party size; (iv) educating users regarding best practices; (v) using volunteer or paid patrollers; (vi) establishing speed limits; (vii) adding natural features to discourage improper uses of permitted routes; (viii) designating the direction of travel on a permitted route; and (ix) separating uses of permitted routes— (I) by day or time of day; or (II) seasonally. (4) Effect of subsection (A) In general Subject to subparagraph (B), nothing in this subsection requires the Secretary of Agriculture, the Secretary of the Interior, or any local official— (i) to alter any wilderness area; (ii) to allow in a wilderness area any use that is likely to change the wilderness character of the area; (iii) (I) to open a permitted route or wilderness area to a public recreational use; or (II) to maintain a permitted route or wilderness area for such a use; or (iv) to allow any nonmotorized travel on any portion of the Appalachian National Scenic Trail that is administered entirely as a footpath pursuant to section 5(a)(1) of the National Trails System Act ( 16 U.S.C. 1244(a)(1) ). (B) Presumption A form of nonmotorized travel, regardless of whether the nonmotorized travel is mechanically assisted, in which the sole propulsive power source is one or more persons shall be rebuttably presumed to be in accordance with the preservation and maintenance of the wilderness character of a wilderness area. .