The United States trucking industry hauled more freight than ever in 2005, according to the American Trucking Associations (ATA).
The ATA reports that trucks transported 68.9% of the country's total freight volume last year, which translates into 10.7 billion tons and $623 billion in revenue, or 84.3% of the nation's overall freight bill.
"More than 26 million trucks of all classes played a part in reaching the milestone," say ATA officials.
"Of this number, 2.7 million were typical Class 8 tractor-trailer combinations operated by 565,000 interstate motor carriers."