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Navistar Inc. and Paccar Inc. said they are still in the process of earning final certifications for their 2014 truck and engine lineups in order to comply with the federal greenhouse-gas standards that take effect Jan. 1.

The U.S. General Services Administration may require the carrier that wins the federal government’s contract for domestic package deliveries to file regular reports on how it is reducing its greenhouse-gas emissions and using alternative fuels.

Ohio State Reps. Sean O’Brien (D) and Dave Hall (R) introduced legislation Nov. 4 that would provide tax incentives for companies that use alternative fuels.

The Ontario Ministry of the Environment is considering a fuel mandate that would require diesel fuel sold there to contain 2% biodiesel, with the percentage doubled by 2016.

The average U.S. retail price for diesel was unchanged at $3.886 a gallon last week, after declining for five straight weeks, the Department of Energy re­ported Oct. 21.

The U.S. trade deficit was little changed in August, rising 0.4%, the Commerce Department reported.

American Trucking Associations and several oil producer and user trade groups have asked an appeals court to reconsider a three-judge appeals panel’s ruling upholding California’s low-carbon fuel standard.

A federal appeals court has upheld a provision in California’s landmark 2007 global warming law requiring the oil industry to reduce the carbon content in diesel and gasoline fuels by at least 10% by 2020.

California legislators have approved a pair of bills that would provide funding to help fleets purchase low-emission trucks and encourage the development and use of alternative-fuel trucks.