($ millions)
| Rank | State | Total | Exports | Imports |
|---|---|---|---|---|
| 1 | Michigan | 31,821 | 13,583 | 18,238 |
| 2 | Ohio | 13,627 | 9,371 | 4,256 |
| 3 | California | 10,724 | 3,391 | 7,334 |
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Transborder Surface Freight Data, 2008.