; and (3) by adding at the end the following: (3) Permissible forms of recreational use on permitted routes (A) Determinations by local officials (i) In general Notwithstanding any other provision of law, the Secretary of Agriculture and the Secretary of the Interior shall authorize relevant local officials to determine, by not later than 2 years after the date of enactment of the Human-Powered Travel in Wilderness Areas Act , all permissible forms of nonmotorized travel over any permitted route within the jurisdiction of the local official. (ii) Failure to determine (I) In general If a local official fails to make the determination described in clause (i) with respect to a permitted route within the jurisdiction of the local official by the date that is 2 years after the date of enactment of the Human-Powered Travel in Wilderness Areas Act , any form of nonmotorized travel shall be allowable on the permitted route. (II) Effect of clause Nothing in this clause limits the authority of a local official to make a determination described in clause (i) relating to a permitted route described in subclause (I) after the date that is 2 years after the date of enactment of the Human-Powered Travel in Wilderness Areas Act , in accordance with this subparagraph. (iii) Requirement In making a determination pursuant to this subparagraph, a local official shall seek to accommodate all forms of nonmotorized travel, to the maximum extent practicable. (B) Authority In making a determination pursuant to subparagraph (A), a local official may carry out such activities and promulgate such regulations as the local official determines to be appropriate to reduce, eliminate, or prevent environmental impacts or undue conflicts among members of nonmotorized travel user groups, including— (i) restricting, by permit or other means, the number of individuals allowed on a permitted route or in a wilderness area; (ii) instructing users to stay on permitted routes; (iii) limiting party size; (iv) educating users regarding best practices