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Traffic Volume Trends - June 2005

Based on preliminary reports from the State Highway Agencies, travel during June 2005 on all roads and streets in the nation changed by 1.6 percent resulting in estimated travel for the month at 257.6** billion vehicle-miles.

This total includes 98.4 billion vehicle-miles on rural roads and 159.2 billion vehicle-miles on urban roads and streets.

Cumulative Travel changed by +0.4 percent.

Note: Annual travel has been adjusted to match the Highway Performance Monitoring System for 2003. While the adjustment to total travel was less than one percent, rural travel declined 5% and urban travel increased 4% because of this adjustment. The larger changes to rural and urban travel are primarily because of the expansion in urban boundaries reflected in the 2000 census. Travel estimates for 2004 and beyond will also reflect this adjustment.

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 of Vehicle Miles
All Roads and Streets

Year June Year to Date Moving 12-Month
1980 131,679 737,625 1,518,222
1981 135,545 751,927 1,535,158
1982 142,111 757,690 1,556,032
1983 146,738 787,177 1,621,968
1984 153,403 823,096 1,685,027
1985 158,703 850,976 1,744,650
1986 162,370 880,813 1,804,600
1987 167,826 928,892 1,886,319
1988 178,690 981,999 1,977,435
1989 184,094 1,024,710 2,068,297
1990 189,529 1,053,740 2,136,069
1991 193,467 1,055,250 2,149,011
1992 197,232 1,091,660 2,208,624
1993 199,414 1,116,525 2,272,018
1994 207,280 1,141,229 2,321,409
1995 211,370 1,188,287 2,404,645
1996 215,551 1,203,679 2,438,167
1997 222,254 1,245,655 2,524,178
1998 228,733 1,272,811 2,587,529
1999 235,970 1,293,581 2,646,133
2000 243,012 1,348,956 2,734,833
2001 243,693 1,365,387 2,763,356
2002 248,094 1,396,531 2,828,431
2003 252,048 1,403,234 2,862,211
2004 253,668 1,430,206 2,917,068
2005 257,622 1,435,716 2,928,720

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.

** System entries may not add to give "All Systems" total due to rounding for Page 2 to 8.

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