The federal Transportation Services Index fell 0.2 percent to 127.3 in December.
This is the first decline after three consecutive monthly increases, the U.S. Department of Transportation reported.
The TSI for freight fell 0.4 percent to 128.4 in December. That’s 4.5 percent higher than the December 2003 level.
The overall TSI measures month-to-month changes in the output of services provided by for-hire transportation industries, both passenger and cargo, including railroad, air, truck, inland waterway, pipeline and local transit.