| Value | Short tons | Ton-miles | ||||
|---|---|---|---|---|---|---|
| Number ($ millions) |
Percent | Number (thousands) |
Percent | Number (millions) | Percent | |
| All modes | 76,537 | 100.0 | 127,429 | 100.0 | 47,456 | 100.0 |
| Single modes | 58,702 | 76.7 | 122,023 | 95.8 | 42,187 | 88.9 |
| Truck | 52,082 | 68.0 | 91,178 | 71.6 | 14,191 | 29.9 |
| For-hire | 25,152 | 32.9 | 32,852 | 25.8 | 8,734 | 18.4 |
| Private truck | 26,806 | 35.0 | 58,086 | 45.6 | 5,387 | 11.4 |
| Rail | 2,794 | 3.7 | 30,543 | 24.0 | 27,789 | 58.6 |
| Water | Z | Z | Z | Z | Z | Z |
| Shallow draft | Z | Z | Z | Z | Z | Z |
| Great Lakes | Z | Z | Z | Z | Z | Z |
| Deep draft | Z | Z | Z | Z | Z | Z |
| Air (including truck and air) | 3,767 | 4.9 | 100 | Z | 188 | Z |
| Pipeline | S | S | S | S | S | S |
| Multiple modes | 14,800 | 19.3 | S | S | S | S |
| Parcel, U.S. Postal Service, or courier service | 14,127 | 18.5 | 432 | Z | 418 | Z |
| Truck and rail intermodal combination | 584 | Z | 916 | Z | 725 | 1.5 |
| Truck and water | S | S | S | S | S | S |
| Rail and water | S | S | S | S | S | S |
| Other multiple modes | Z | Z | Z | Z | Z | Z |
| Other and unknown modes | 3,035 | 4.0 | 1,440 | 1.1 | 345 | Z |
KEY: S = data do not meet publication standards because of high sampling variability or other reasons; Z = zero or less than 1 unit of measure.
NOTE: The Commodity Flow Survey covers business establishments in mining, manufacturing, wholesale trade, and selected retail industries. The survey also covers selected auxiliary establishments (e.g., warehouses) of in-scope multiunit and retail companies. The survey excludes establishments classified as farms, forestry, fisheries, governments, construction, transportation, foreign establishments, services, and most establishments in retail. Due to industry-wide reporting problems, shipments by oil and gas extraction establishments are also excluded.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 1997 Commodity Flow Survey: Washington, DC: 1999, available at http://www.bts.gov/ntda/cfs/cfs97od.html as of Nov. 2, 2001.