Roadway Extent and Use in Indiana
| Year | Total Miles of Public Roads | Vehicle Miles Traveled by All Vehicles (Millions) | Vehicle Miles Traveled by Trucks (Millions) | Truck Percent of All Vehicle Miles Traveled |
| 1998 | 93,344 | 69,129 | 7,105 | 10% |
| 1999 | 93,605 | 70,041 | 7,508 | 11% |
| 2000 | 93,608 | 70,862 | 7,393 | 10% |
| 2001 | 94,037 | 71,624 | 7,391 | 10% |
| 2002 | 94,287 | 72,523 | 7,085 | 10% |
| 2003 | 94,597 | 72,511 | 9,843 | 14% |
| 2004 | 94,597 | 72,713 | 9,829 | 14% |
Source: Highway Statistics (1997-2004); U.S. Department of Transportation,
Federal Highway Administration, Office of Highway Policy Information.