http://www.fs.fed.us/r5/sanbernardino/ap/questions-and-answers.shtml#nnc
Who will need to purchase a National Forest Adventure Pass?
This is a pass to use designated sites and areas of the Angeles, Cleveland, Los Padres and San Bernardino National Forests. Visitors to these four forests will be required to display the Pass in their vehicles when using the Forest for recreation purpose. The Adventure Pass is not a national pass like the
America the Beautiful Interagency Passes. It is a local regional pass, required only on the four forests listed above.
America the Beautiful Interagency Passes are also accepted at all locations where the Adventure Pass is required. Go to the page links below to view a listing of the Sites & Areas that require a recreation fee. These pages include additional links to maps and vendors sales outlets.
Are there exceptions to the need for an Adventure Pass?
You will not need a pass when traveling through the Forest and not stopping, when stopped for activities incidental to through travel (stretch break, photo-opportunity, use a restroom), when you are parked at your residence or at an organization camp, or within areas covered by special use permits. A Pass is not required for people stopping for information at Ranger stations, visitor centers and other Forest Service offices, or for off-road vehicles (displaying California State OHVMR Green or Red stickers) while they are parked within a designated OHV route or area. Volunteers and educational institutions, such as schools that bring children to the Forest for an outing, are also exempt.
What about places like ski resorts and campgrounds, where I already pay?
You won't need an Adventure Pass while parked at places where a site-specific fee is already charged. The Adventure Pass covers day-use of certain campground, and these will be posted on-site. If you're uncertain whether or not you need a Pass, please call your local Forest Service office or view the listing at
Designated Recreation Sites.