|General aviation airports||18,721||19,235|
|Commuter rail stations||986||1,219|
|Heavy rail stations||1,019||1,041|
|Light rail stations||613||895|
|Cargo handling docks||U||8,197|
aCertificated airports serve air carrier operations with aircrafts seating more than nine passengers. bPorts handling over 250,000 short tons.
Key: LNG = liquified natural gas; U = Data are unavailable.
Sources: Air, Highway, Rail–U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, tables 1-3, 1-7, and 1-28, available at www.bts.gov as of October 2013. Pipeline–U.S. Department of Transportation, Pipeline and Hazardous Materials Administration, available at phmsa.dot.gov/pipeline/library/data-stats as of October 2013. Transit–U.S. Department of Transportation, National Transit Database, available at www.ntdprogram.gov as of October 2013. Water–U.S. Army Corps of Engineers, Navigation Data Center, available at www.navigationdatacenter.us as of October 2013.