Vehicle miles traveled (VMT) is one of the most widely used measures of travel intensity and facility utilization. For any given segment of roadway, the VMT is obtained by multiplying the Annual Average Daily Traffic (AADT) by the length of the roadway segment. For example, on a 5-mile highway segment traveled by 5,000 vehicles daily (an average obtained over a year), the VMT would be 25,000. VMT is a measure of total vehicle activity.
Data Source: US Department of Transportation, Federal Highway Administration, Office of Highway Policy Information, Highway Statistics.
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