Six international freight forwarders have agreed to plead guilty and pay $50.3 million in fines in relation to a price-fixing investigation, federal officials said.

A pair of U.S. senators introduced legislation last week aimed at curbing fraud by unscrupulous freight brokers.

Penske Truck Leasing has ordered 750 Freightliner Cascadia trucks with selective catalytic reduction technology, making the manufacturer the majority supplier of 2010 tractors to Penske, Freightliner said.