Subject
Roads
Motor vehicles Recreational use
81
Automobile driving
35
Automobiles Recreational use
28
Trails
13
Shenandoah National Park (Va.)
12
Automobile driving Recreational use
11
Mark Twain National Forest (Mo.)
9
Pike National Forest (Colo.)
9
Monongahela National Forest (W. Va.)
6
Ozark National Forest (Ark.)
6
Flathead National Forest (Mont.)
5
Forest roads
5
Kisatchie National Forest (La.)
5
San Isabel National Forest (Colo.)
5
Dixie National Forest (Utah)
4
Hiawatha National Forest (Mich.)
4
Kootenai National Forest (Mont. and Idaho)
4
Lolo National Forest (Mont.)
4
Los Padres National Forest (Calif.)
4
Off-road vehicle trails
4
Superior National Forest (Minn.)
4
Willamette National Forest (Or.)
4
Idaho Panhandle National Forests Region (Idaho)
3
Mount Hood National Forest (Or.)
3
Nantahala National Forest (N.C.)
3
Pisgah National Forest (N.C.)
3
Rio Grande National Forest (Colo.)
3
Routt National Forest (Colo.)
3
San Juan National Forest (Colo.)
3
Sawtooth National Forest (Idaho and Utah)
3
Wayne National Forest (Ohio)
3
Arapaho National Forest (Colo.)
2
Gunnison National Forest (Colo.)
2
Manti-La Sal National Forest (Utah and Colo.)
2
Nebraska National Forest (Neb. and S.D.)
2
Olympic National Forest (Wash.)
2
Rogue River-Siskiyou National Forest (Or. and Calif.)
2
Carson National Forest (N.M.)
1
Chesapeake and Ohio Canal (Md. and Washington, D.C.)
1
Chippewa National Forest (Minn.)
1
Coeur d'Alene River Ranger District (Idaho)
1
Croatan National Forest (N.C.)
1
Daniel Boone National Forest (Ky.)
1
Death Valley National Park (Calif. and Nev.)
1
Denali Highway (Alaska)
1
Finger Lakes National Forest (N.Y.)
1
Fishlake National Forest (Utah)
1
Fort Pierre National Grassland (S.D.)
1
Francis Marion National Forest (S.C.)
1
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