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Table 5
Highway Vehicle-Miles Traveled per Driving Age 16+ Population Equation Estimation

Dependent variable: vehicle miles traveled per driver
Method: least squares
Sample (adjusted): February 2000 to June 2003
Included observations: 41 after adjustments

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Variable Coefficient Standard error t-Statistic Probability
RPM per departure -0.989 0.398 -2.483 0.018
Income per population 16+ 0.035 0.001 58.356 0.000
Exponential Dummy 9/11 -44.820 13.488 -3.323 0.002
AR(1) 0.797 0.107 7.415 0.000
R-squared 0.748         
Adjusted R-squared 0.727         

SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics.
Research and Innovative Technology Administration (RITA) • U.S. Department of Transportation (US DOT)
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