Section 212.80 - Purpose, scope, and definitions(a)Purpose. This subpart provides for a system of National Forest System roads, National Forest System trails, and areas on National Forest System lands that are designated for over-snow vehicle use. After these roads, trails, and areas are designated, over-snow vehicle use not in accordance with these designations is prohibited by 36 CFR 261.14 . Over-snow vehicle use off designated roads and trails and outside designated areas is prohibited by 36 CFR 261.14 .(b)Scope. The Responsible Official may incorporate previous administrative decisions regarding over-snow vehicle use made under other authorities in designating National Forest System roads, National Forest System trails, and areas on National Forest System lands for over-snow vehicle use under this subpart.(c)Definitions. For definitions of terms used in this subpart, refer to § 212.1 .80 FR 4511, Jan. 28, 2015