Subject
Motor vehicles Recreational use
Automobile driving
16
Forest roads
14
Shasta-Trinity National Forest (Calif.)
6
Coronado National Forest (Ariz. and N.M.)
4
Kaibab National Forest (Ariz.)
3
Roads
3
All terrain vehicle driving
2
Lassen National Forest (Calif.)
2
Mendocino National Forest (Calif.)
2
Outdoor recreation
2
Wayne National Forest (Ohio)
2
Allegheny National Forest (Pa.)
1
Angeles National Forest (Calif.)
1
Bighorn National Forest (Wyo.)
1
Carson National Forest (N.M.)
1
Comanche National Grassland (Colo.)
1
Douglas Ranger District (Ariz.)
1
Klamath National Forest (Calif. and Or.)
1
Medicine Bow National Forest (Wyo.)
1
Nogales Ranger District (Ariz.)
1
Roosevelt National Forest (Colo.)
1
Safford Ranger District (Ariz.)
1
Santa Catalina Ranger District (Ariz.)
1
Sequoia National Forest (Calif.)
1
Sierra Vista Ranger District (Ariz.)
1
Trails
1
Tusayan Ranger District (Ariz.)
1