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Traffic Volume Trends - June 2002

Based on preliminary reports from the State Highway Agencies, travel during July 2002 on all roads and streets in the nation changed by +2.3 percent as compared to July 2001 resulting in estimated travel for the month at 254.5 billion vehicle-miles. This total includes 106.3 billion vehicle-miles on rural roads and 148.2 billion vehicle-miles on urban roads and streets.

Travel for the current month as well the cumulative yearly total on all roads and streets is shown below. Similar totals for each year since 1970 are also included.

Travel in Millions
All Roads and Streets
YearJulyYear to Date
1970106,392642,193
1971112,466678,089
1972118,594729,707
1973121,685757,203
1974120,890733,715
1975124,493762,388
1976130,891810,582
1977136,199840,737
1978148,209886,150
1979134,853883,389
1980136,250873,876
1981141,253893,180
1982152,200909,890
1983156,823944,000
1984161,702984,798
1985166,8811,017,858
1986171,1141,051,927
1987175,7831,104,674
1988184,7791,166,778
1989190,9851,215,695
1990195,4701,249,210
1991198,3871,253,637
1992206,6161,298,275
1993209,8381,326,364
1994214,7781,356,007
1995217,1881,405,475
1996225,1091,428,788
1997236,7131,482,368
1998239,9441,512,756
1999243,1161,536,698
2000245,3351,595,722
2001248,7861,607,638
2002254,5341,638,131

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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