Traffic Volume Trends - April 2007

Based on preliminary reports from the State Highway Agencies, travel during April 2007 on all roads and streets in the nation changed by -0.4 percent resulting in estimated travel for the month at 247.9** billion vehicle-miles.

This total includes 85.2 billion vehicle-miles on rural roads and 162.7 billion vehicle-miles on urban roads and streets.

Cumulative Travel changed by -0.7 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. Similar totals for each year since 1982 are also included.

Travel in Millions of Vehicle Miles All Roads and Streets

Year	March	Year to Date	Moving 12-Month
1982	129,845	475,296	1,543,488
1983	132,741	496,819	1,614,003
1984	141,327	518,647	1,670,936
1985	147,635	535,547	1,733,671
1986	150,277	557,984	1,797,200
1987	159,801	593,289	1,873,545
1988	166,804	625,267	1,956,306
1989	174,320	655,793	2,056,112
1990	179,033	674,963	2,126,210
1991	179,538	669,854	2,142,392
1992	186,069	697,702	2,200,062
1993	188,737	711,130	2,260,579
1994	195,407	727,355	2,312,930
1995	198,213	764,330	2,394,562
1996	205,253	769,452	2,427,897
1997	211,290	797,319	2,510,068
1998	217,921	816,180	2,579,234
1999	220,996	826,825	2,636,008
2000	227,809	863,387	2,716,021
2001	232,741	876,443	2,759,981
2002	237,464	897,493	2,816,660
2003	239,674	899,257	2,857,272
2004	250,944	939,044	2,930,238
2005	250,837	948,339	2,971,785
2006	248,824	954,501	2,998,903
2007	247,909	947,696	2,989,629

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. Because of the limited sample sizes, caution should be used with these estimates. The Highway Performance Monitoring System provides more accurate information on an annual basis.

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

April 2007 Traffic Volume Trends