AT – Appalachian trail
I-35 – Inter State High Way 35
JMT – John Muir Trail
LNT – Leave No Trace
NHS – National Historic Site
NM – National Monument
NP – National Park
NHP – National Historic Park
NRA – National Recreation Area
NMEM – National Memorial
NPRES – National Preserve
NB – National Battlefield
MEM – Memorial
NMP – National Military Park
NSR – National Scenic River
NL – National Lakeshore
NBP – National Battlefield Park
NST – National Scenic Trail
W&SR – Wild and Scenic River
PKWY – Parkway
R値 – thermal Resistance Value (熱抵抗値) 小さいほど熱伝導率がよく(熱くなりやすく冷めやすい)、大きいと熱が伝わりにくい・逃げにくいということになる。
NRRA – National River and Recreation Area
NR – National River
S&RR – Scenic & Recreational River
EHP – Ecological and Historic Preserve
PCT – Pacific Crest Trail
RS – Ranger Station
SR20 – State Route(Road) 20
US101 – United State Road 101
VC – Visitor Center
WIC – Wilderness Information Center
WT – Wonderland trail