; (B) agricultural uses; (C) primitive recreational opportunities; and (D) natural, historic, and scenic resources. (3) Motorized vehicles (A) In general Except as provided in subparagraph (B), the use of motorized vehicles in the Special Management Area shall be allowed only on established legal routes with authorized motorized use existing on the date of enactment of this Act. (B) Exceptions Notwithstanding subparagraph (A), the use of motorized vehicles may be allowed in the Special Management Area for the construction, reconstruction, or maintenance of necessary infrastructure, as determined by the Director. (4) Grazing Grazing of livestock in the Special Management Area shall be administered in accordance with the laws generally applicable to land under the jurisdiction of the Bureau. (5) Prohibition on certain overhead towers No new overhead transmission or communications tower shall be constructed in the Special Management Area. (6) Underground rights-of-way The Director may expand any underground right-of-way in the Special Management Area that exists as of the date of enactment of this Act. (7) Buffer zones (A) In general Nothing in this subsection creates a protective perimeter or buffer zone around the Special Management Area. (B) Activities outside special management area The fact that an activity or use on land outside the Special Management Area can be seen or heard within the Special Management Area shall not preclude the activity or use outside the boundary of the Special Management Area. (8) Land exchanges and easements (A) Land exchanges (i) In general The Director may propose to, and carry out with, an individual or entity owning land in the vicinity of the Special Management Area any land exchange that— (I) increases access to the Special Management Area; and (II) does not result in a net loss of Federal land. (ii) Process The Director may carry out clause (i)— (I) through the use of existing processes