Travel on all roads and streets continued to trend higher for December 2015, up 4.2 percent or 10.6 billion vehicle miles, compared to December 2014. This is according to the latest figures from The Federal Highway Administration, a division of the U.S. Department of Transportation.
Travel for the month is estimated to be 264.2 billion vehicle miles. Cumulative travel for 2015 is up 3.5 percent, or up 107.2 billion vehicle miles. The cumulative estimate for the year is 3,147.8 billion vehicle miles.
On a year-over-year basis, all regions showed growth. The West showed the largest increase in miles driven, up 6.9 percent. This region was followed by the South Atlantic, which was up 4.4 percent.
From November 2015 to December 2015, all regions showed growth in miles driven. The largest increase was in the Northeast, up 9.9 percent. This region was followed by the North Central region, up 5.3 percent.
Year-over-year figures in millions:
| Region | December 2015 | December 2014 | Percent Change |
| Northeast | 38,622 | 37,542 | +3.0 |
| South Atlantic | 54,945 | 52,629 | +4.4 |
| North Central | 58,471 | 56,792 | +3.0 |
| South Gulf | 50,523 | 49,052 | +3.0 |
| West | 61,600 | 57,611 | +6.9 |
| Total | 264,201 | 253,625 | +4.2 |
Month-over-month figures in millions:
| Region | December 2015 (Preliminary) | November 2015 (Revised) | Percent Change |
| Northeast | 38,662 | 35,175 | +9.9 |
| South Atlantic | 54,945 | 53,370 | +3.0 |
| North Central | 58,471 | 55,514 | +5.3 |
| South Gulf | 50,523 | 49,989 | +1.0 |
| West | 61,600 | 59,026 | +4.4 |
| Total | 264,201 | 253,073 | +4.4 |
