The American Trucking Associations' advanced seasonally adjusted For-Hire Truck Tonnage Index increased 2.4 percent in January 2008, after rising an amended 1.5 percent in December 2007.
ATA recently revised the seasonally adjusted index back five years. New seasonal factors resulted in slightly lower truck tonnage volumes for 2007 than previously reported.
The truck tonnage index fell 1.5 percent in 2007 from the previous year. The group originally reported a 1.4 percent drop. December's tonnage level, meanwhile, climbed a modest 1.5 percent; down from the previously reported 4.1 percent gain. ATA annually revises the index as part of its calculation for the upcoming year's seasonal factors. ATA also restated the not seasonally adjusted data for several months in 2007 as some carriers amended tonnage levels at year end. The not seasonally adjusted index surged 11.4 percent from December to 113.6.
The latest seasonally adjusted increase marked the third sequential gain, totaling 5.7 percent. The tonnage index stood at 117.3 (2000 = 100) in January, a 26-month high. Tonnage was also up 5.3 percent from a year earlier, which was the largest year-over-year gain since January 2005.