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The Federal Motor Carrier Safety Administration has pushed back the deadline for public comment about changes to the hours-of-service rules for oilfield haulers.

Managers of the nation’s largest shipper-owned truck fleets are taking steps to counter the rising cost of fuel and equipment by more closely monitoring drivers and using new data collection techniques to make better routing decisions and improve compliance with safety and environmental regulations.

Truck and engine manufacturer Navistar International Corp., pressed to find a way to offer engines that comply with federal emissions regulations, said last week that it has reached an agreement to use Cummins Inc. selective catalytic reduction technology for its 13-liter engines and offer Cummins 15-liter engines in some of its International brand trucks.

The California Air Resource Board will be conducting increased heavy duty diesel truck inspections throughout August at scales, truck stops and fleet facilities.

Federal officials have approved a permit for the southern leg of the Keystone XL pipeline that will run from an oil refinery in Cushing, Okla., to the Texas coast, the Associated Press reported.

Satisfaction with model-year 2011 trucks suffered as a result of technology added to comply with 2010 federal emissions regulations, which resulted in customers’ reporting more problems with the trucks, a recent J.D. Power and Associates’ survey found.

UPS said it has completed testing of its “plastic truck,” a composite-bodied vehicle that’s lighter and uses 40% less fuel than its current package cars, and will soon add 150 of the new vehicles to its delivery fleet.

A federal appeals court backed the Obama administration's campaign to limit greenhouse-gas emissions, the Wall Street Journal reported Wednesday.