Notes
Quality Assurance Statement
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Notice
This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for its contents or use thereof.
Data Sources
The data used throughout this document reflect the latest numbers available at the time of publication. The table below shows the year of the data and statistics compiled from a wide range of U.S. Department of Transportation operating administrations and other statistical agencies throughout the Federal Government.
| Data category | Year of data |
|---|---|
| Airports and aircraft | 2013 |
| Air passenger enplanements, flights | 2014 |
| Ferry passengers, terminals | 2009 |
| Foreign trade and transportation | 2014 |
| Freight transportation patterns | 2012 (CFS) |
| 2013 (FAF) GDP, labor force, personal expenditures | 2013 |
| Highways, public roads and street mileages, bridges, lane-miles, motor vehicles, PMT, VMT | 2013 |
| Passenger enplanements, RPM, and enplaned revenue ton-miles | 2014 |
| Passenger travel patterns | 2009 (NHTS) |
| 2013 (ACS) Pipelines | 2014 |
| Rail freight transportation and passenger ridership | 2013 |
| Recreational boats, waterways, commercial vessels, locks, facilities, and seaports | 2013 |
| Safety | 2013 |
| Transit vehicles, person-miles traveled, unlinked passenger trips | 2013 |
KEY: ACS = American Communities Survey, CFS = Commodity Flow Survey, FAF = Freight Analysis Framework, GDP = gross domestic product, NHTS = National Household Travel Survey, PMT = passenger-miles traveled, RPM = revenue passenger-miles, VMT = vehicle-miles traveled.