The consecutive 14-month trend of declining driving - between November 2007 and December 2008 - now tops 115 billion VMT, compared to the same period a year earlier. As it has since the trend began, the decline in rural driving in December 2008 outpaced urban driving.
At 4.8 percent fewer VMT compared to December 2007, the new data show the West - a bloc of 13 states - experienced the biggest decline. At 14.7 percent and 11.1 percent fewer VMT respectively, Oregon and Washington led the nation with the largest single-state declines that month which is due, in part, to unusually large snowfall.
Despite the overall national decline, 17 states posted slight increases - the first identified since August. Colorado led the nation in increased single-month travel, with 5.4 percent - or about 200 million VMT - more than in December 2007.
To review the VMT data in FHWA's "Traffic Volume Trends" reports, including that of December 2008, visit www.fhwa.dot.gov/ohim/tvtw/tvtpage.htm.