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Highway Statistics 2006 OHPI > Highway Statistics > 2006 > Roadway Extent > Table VM-1

ANNUAL VEHICLE DISTANCE TRAVELED IN MILES AND RELATED DATA - 2006 1/
BY HIGHWAY CATEGORY AND VEHICLE TYPE

January 2011 Table VM-1
YEAR ITEM PASSENGER
CARS
MOTOR­CYCLES 3/ BUSES OTHER
2-AXLE 4-TIRE
VEHICLES 4/
SINGLE-UNIT
2-AXLE 6-TIRE
OR MORE TRUCKS 5/
COMBINATION
TRUCKS
SUBTOTALS ALL
MOTOR VEHICLES
PASSENGER
CARS
AND
OTHER 2-AXLE
4-TIRE VEHICLES
SINGLE-UNIT
2-AXLE 6-TIRE
OR MORE AND
COMBINATION
TRUCKS
  Motor-Vehicle Travel: (millions of vehicle-miles) /2
2006 Interstate Rural 123,847 1,367 950 81,548 7,125 43,079 205,395 50,204 257,915
2006 Other Arterial Rural 207,029 1,602 959 145,716 13,847 25,430 352,744 39,277 394,582
2006 Other Rural 206,732 1,666 1,612 145,773 15,154 13,711 352,505 28,865 384,649
2006 All Rural 537,607 4,635 3,521 373,036 36,125 82,221 910,644 118,346 1,037,146
2006 Interstate Urban 267,106 2,379 1,024 166,660 10,033 30,085 433,766 40,118 477,287
2006 Other Urban 885,821 5,035 2,239 542,794 34,186 29,863 1,428,615 64,049 1,499,938
2006 All Urban 1,152,927 7,414 3,263 709,454 44,219 59,948 1,862,381 104,167 1,977,225
2006 Total Rural and Urban 1,690,534 12,049 6,783 1,082,490 80,344 142,169 2,773,025 222,513 3,014,371
2006 Number of motor vehicles registered 6/ 135,399,945 6,678,958 821,959 99,124,775 6,649,337 2,169,670 234,524,720 8,819,007 250,844,644
2006 Average miles traveled per vehicle 12,485 1,804 8,253 10,920 12,083 65,526 11,824 25,231 12,017
2006 Person-miles of travel (millions) 7/ 2,671,044 15,303 143,816 1,876,690 80,344 142,169 4,547,734 222,513 4,929,366
2006 Fuel consumed (thousand gallons) 8/ 75,008,950 221,030 1,148,409 60,685,249 9,852,378 28,106,544 135,694,199 37,958,921 175,022,559
2006 Average fuel consumption per vehicle (gallons) 8/ 554 33 1,397 612 1,482 12,954 579 4,304 698
2006 Average miles traveled per gallon of fuel consumed 8/ 22.5 54.5 5.9 17.8 8.2 5.1 20.4 5.9 17.2

1/ The 50 states and the District of Columbia report travel by highway category, number of motor vehicles registered, and total fuel consumed. The travel and fuel data by vehicle type and stratification of trucks are estimated by the Federal Highway Administration (FHWA). Entries for 2005 have been revised based on the availability of more current data. Estimation procedures include use of State supplied data, the 2002 Census of Transportation Vehicle Inventory and Use Survey (VIUS), and other sources.

2/ Totals by highway category are from table VM-2.

3/ Estimation process accounts for all States, including those that did not report motorcycles (District of Columbia, Illinois, Missouri, Nevada, Pennsylvania, and Texas).

4/ Other 2-Axle 4-Tire Vehicles which are not passenger cars. These include vans, pickup trucks, and sport/utility vehicles.

5/ Single-Unit 2-Axle 6-Tire or More Trucks on a single frame with at least two axles and six tires.

6/ Truck registration figures are from tables MV-1 and MV-9 with truck distribution estimated by the FHWA using the 2002 VIUS. For 2006 Colorado and Indiana data for 2005 was used.

7/ Vehicle occupancy is estimated by the FHWA from the 2001 National Household Travel Survey (NHTS) with nominal values for heavy trucks.

8/ Total fuel consumption figures are from tables MF-21 and MF-27. Distribution by vehicle type is estimated by the FHWA based on miles per gallon for both diesel and gasoline powered vehicles using State-supplied data, the 2002 VIUS, and other sources with nominal inputs for motorcycles and buses. Procedures were revised for this table.

The data now on the website for 2000-2006 were estimated using a methodology developed in the late 1990s. FHWA recently developed a new methodology and used it for this year's Highway Statistics. This methodology takes advantage of additional and improved information available beginning in 2007 when states were first required to report motorcycle data – before that time, the reporting was not mandatory and the data were missing for a few states. Also, the new methodology does not rely on data from the national vehicle inventory and use survey which provided critical data for the original methodology but was not collected in 2007 as planned.

In April 2011, FHWA recalculated the 2000-2008 data along with the 2009 data to estimate trends. However, after further review and consideration, the agency determined that it is more reliable to retain the original 2000-2006 estimates because the information available for those years does not fully meet the requirements of the new methodology. Thus, the original 2000-2006 estimates are now used, whereas the 2007-2009 data are still based on the new methodology.


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