Table 2-4 Annual Person-Trips and Person-Miles Traveled by Mode: 1995, 2001, and 2009
Person-trips (millions)
| 1995 | 2001 | 2009 | ||||
|---|---|---|---|---|---|---|
| Number | Percent | Number | Percent | Number | Percent | |
| Total | 378,930 | 100.0 | 384,485 | 100.0 | 392,023 | 100.0 | 
| Privately-owned vehicle | 327,400 | 86.4 | 331,847 | 86.3 | 327,118 | 83.4 | 
| Transit | 6,638 | 1.8 | 6,202 | 1.6 | 7,520 | 1.9 | 
| Walk | 20,325 | 5.4 | 33,145 | 8.6 | 40,962 | 10.4 | 
| Bike | 3,342 | 0.9 | 3,213 | 0.8 | 4,082 | 1.0 | 
| Air | 313 | 0.1 | 359 | 0.1 | 311 | 0.1 | 
| Other | 20,913 | 5.5 | 9,718 | 2.5 | 12,031 | 3.1 | 
Person-miles traveled (millions)
| 1995 | 2001 | 2009 | ||||
|---|---|---|---|---|---|---|
| Number | Percent | Number | Percent | Number | Percent | |
| Total | 3,411,122 | 100.0 | 3,783,979 | 100.0 | 3,732,791 | 100.0 | 
| Privately-owned vehicle | 3,110,249 | 91.2 | 3,337,234 | 88.2 | 3,298,168 | 88.4 | 
| Transit | 72,577 | 2.1 | 44,355 | 1.2 | 54,393 | 1.5 | 
| Walk | 10,821 | 0.3 | 23,522 | 0.6 | 27,943 | 0.7 | 
| Bike | 4,586 | 0.1 | 6,162 | 0.2 | 8,956 | 0.2 | 
| Air | 116,694 | 3.4 | 280,974 | 7.4 | 240,651 | 6.4 | 
| Other | 96,194 | 2.8 | 91,733 | 2.4 | 102,680 | 2.8 | 
NOTE: Person-trips are trips by one person in any mode of transportation. Other includes other and unreported modes.
SOURCE: 1995–U.S. Department of Transportation, National Passenger Travel Survey and 2001 and 2009–U.S Department of Transportation, National Household Travel Survey,all available at nhts.ornl.gov as of March 2015.