distance driven in the United States during the period from 1984 through 2017. Distance driven per person reached a maximum in 2004. While this rate has been on a rebound since 2013, the 2017 rate is still down from 2004 by 5.2%. Numbers of light-duty vehicles (passenger cars and light trucks) were obtained from the Federal Highway Administration. Vehicles per person reached a maximum in 2006, two years after a maximum for distance driven per person. Vehicles per person has been on a rebound since 2012, but it is still down from 2006 by 2.2%. In comparison, distance driven per person is down by 5.2% from its maximum. Vehicles per person increased by 18.2% from 1984 to 2006 (from 0.665 vehicles to 0.786 vehicles), then decreased by 5.3% by 2012 (to 0.744 vehicles), and then increased by 3.4% by 2017 (to 0.769 vehicles).
— source greencarcongress.com | 22 Apr 2019