Box 2. Components of the Freight Transportation Services Index
Thursday, December 22, 2011
Box 2. Components of the Freight Transportation Services Index
| Mode | Source | Measure |
|---|---|---|
| Trucking | American Trucking Associations (ATA) | Truck tonnage index |
| Air | BTS and carrier websites | Revenue freight ton-miles |
| Rail | Association of American Railroads (AAR) | Carloads & Intermodal units |
| Federal Railroad Administration (FRA) | Quarterly ton-miles | |
| Water | U.S. Army Corps of Engineers (USACE) | Tonnage of inbound waterborne trade |
| Pipeline | Energy Information Administration (EIA) | Thousands of barrels of pipeline movement |