Business inventories rose 0.4% in June, and sales increased 0.3%, the Commerce Department reported Aug. 13.
The rise in inventories follows a 0.3% increase in May.
Economists had forecast inventories to rise 0.4%, Bloomberg News reported.
Retail inventories increased 0.5% in June, after a 0.3% rise the prior month. Manufacturing increased 0.3% after a 0.8% increase in May, Commerce said.
When sales are growing, trucking usually faces additional demand to deliver goods.