by Calculated Risk on 9/28/2010 07:56:00 PM

From the American Trucking Association: ATA Truck Tonnage Index Plunged 2.7 Percent in August

The American Trucking Associations’ advance seasonally adjusted (SA) For-Hire Truck Tonnage Index fell 2.7 percent in August, which was the largest month-to-month decrease since March 2009. The latest drop lowered the SA index from 110 (2000=100) in July to 106.9 in August.
...
Compared with August 2009, SA tonnage climbed 2.9 percent, which was well below July’s 7.4 percent year-over-year gain. Year-to-date, tonnage is up 6.2 percent compared with the same period in 2009.

ATA Chief Economist Bob Costello said that August’s data highlights that the economy, while still growing, is slowing. “We fully anticipate sluggish economic growth for the remainder of this year and the latest tonnage numbers are reflecting that slowdown.”

This graph from the ATA shows the Truck Tonnage Index since Jan 2006 (no larger image).