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Traffic Volume Trends - May 2004

Based on preliminary reports from the State Highway Agencies, travel during May 2004 on all roads and streets in the nation changed by -0.1 percent resulting in estimated travel for the month at 252.9 billion vehicle-miles.

This total includes 102.6 billion vehicle-miles on rural roads and 150.3 billion vehicle-miles on urban roads and streets.

Cumulative Travel changed by 2.3 percent.

Travel for the current month, the cumulative yearly total, as well as the moving 12-month total on all roads and streets is shown below.

Travel in Millions
All Roads and Streets

Year May Year to Date Moving 12-Month
1979 132,394 617,344 1,566,497,586
1980 131,269 605,946 1,517,735,231
1981 134,305 616,382 1,531,292,061
1982 140,283 615,579 1,549,465,699
1983 143,619 640,438 1,617,340,158
1984 151,046 669,693 1,678,362,517
1985 156,726 692,273 1,739,350,296
1986 160,459 718,443 1,800,932,686
1987 167,776 761,065 1,880,862,270
1988 178,042 803,309 1,966,571,674
1989 184,823 840,616 2,062,892,784
1990 189,247 864,210 2,130,634,292
1991 191,929 861,783 2,145,073,911
1992 196,725 894,428 2,204,858,249
1993 205,981 917,111 2,269,835,330
1994 206,594 933,949 2,313,542,762
1995 212,586 976,916 2,400,554,589
1996 218,676 988,128 2,433,987,023
1997 226,082 1,023,401 2,517,474,292
1998 227,899 1,044,079 2,581,050,804
1999 230,786 1,057,611 2,638,894,936
2000 242,556 1,105,944 2,727,791,628
2001 246,014 1,121,694 2,762,674,975
2002 252,681 1,149,008 2,824,601,046
2003 253,097 1,145,817 2,853,159,750
2004 252,887 1,172,445 2,905,197,614

Traffic Volume Trends is a monthly report based on hourly traffic count data. These data, collected at approximately 4,000 continuous traffic counting locations nationwide, are used to determine the percent change in traffic for the current month compared to the same month in the previous year. This percent change is applied to the travel for the same month of the previous year to obtain an estimate of travel for the current month.

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United States Department of Transportation - Federal Highway Administration