Vehicle miles traveledspeedrevJune 4, 2024 « Back to Glossary Index (VMT) The number of miles traveled nationally by vehicles for a period of 1 year. VMT is either calculated using two odometer readings or, for vehicles with less than two odometer readings, imputed using a regression estimate. A unit to measure vehicle travel made by a private vehicle, such as an automobile, van, pickup truck, or motorcycle. Each mile traveled is counted as one vehicle mile regardless of the number of persons in the vehicle. Related Articles: Glossary: Vehicle fuel consumptionGlossary: VMTGlossary: Traveled« Back to Glossary Index