U.S. Department of Transportation
Federal Highway Administration
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Conditions and Performance Report Chapter 2System and Use Characteristics |
Exhibit 2-11 |
Highway Vehicle (VMT) and Passenger Miles of Travel (PMT),
1987-1997 (Millions of Miles) |
Source: Highway Statistics, Summary to 1995, Tables VM-202 and VM-201, June 1997 HPMS. June 1999 HPMS. |