23 C.F.R. § 660.103
In addition to the definitions in 23 U.S.C. 101(a) , the following apply to this subpart:
Cooperator means a non-Federal public authority which has jurisdiction and maintenance responsibility for a FH.
Forest highway means a forest road under the jurisdiction of, and maintained by, a public authority and open to public travel.
Forest road means a road wholly or partly within, or adjacent to, and serving the NFS and which is necessary for the protection, administration, and utilization of the NFS and the use and development of its resources.
Jurisdiction means the legal right or authority to control, operate, regulate use of, maintain, or cause to be maintained, a transportation facility, through ownership or delegated authority. The authority to construct or maintain such a facility may be derived from fee title, easement, written authorization, or permit from a Federal agency, or some similar method.
Metropolitan Planning Organization (MPO) means that organization designated as the forum for cooperative transportation decisionmaking pursuant to the provisions of part 450 of this title.
Metropolitan Transportation Plan means the official intermodal transportation plan that is developed and adopted through the metropolitan transportation planning process for the metropolitan planning area.
National Forest System means lands and facilities administered by the Forest Service (FS), U.S. Department of Agriculture, as set forth in the Forest and Rangeland Renewable Resource Planning Act of 1974, as amended (16 U.S.C. 1601 note, 1600-1614).
Open to public travel means except during scheduled periods, extreme weather conditions, or emergencies, open to the general public for use with a standard passenger auto, without restrictive gates or prohibitive signs or regulations, other than for general traffic control or restrictions based on size, weight, or class of registration.
Public authority means a Federal, State, county, town, or township, Indian tribe, municipal or other local government or instrumentality with authority to finance, build, operate, or maintain toll or toll-free facilities.
Public lands highway means:
Public road means any road or street under the jurisdiction of and maintained by a public authority and open to public travel.
Renewable resources means those elements within the scope of responsibilities and authorities of the FS as defined in the Forest and Rangeland Renewable Resource Planning Act of August 17, 1974 (88 Stat. 476) as amended by the National Forest Management Act of October 22, 1976 (90 Stat. 2949; 16 U.S.C. 1600 - 1614 ) such as recreation, wilderness, wildlife and fish, range, timber, land, water, and human and community development.
Resources means those renewable resources defined above, plus other nonrenewable resources such as minerals, oil, and gas which are included in the FS's planning and land management processes.
Statewide transportation plan means the official transportation plan that is:
23 C.F.R. §660.103