New "clean truck" standards have been proposed by the U.S. Environmental Protection Agency and the Department of Transportation to improve fuel economy and reduce pollution from the nation's freight trucks and buses.

U.S. average rates on the spot truckload market remained elevated during the week ending June 13, according to DAT Solutions, which operates the DAT network of load boards. Rates in all three equipment categories held firm on the heels of big increases during the first week of June.

In 2014, renewable energy accounted for 9.8 percent of total domestic energy consumption. This marks the highest renewable energy share since the 1930s, when wood was a much larger contributor to domestic energy supply.

Shifting from diesel fuel to natural gas to power the nation's heavy-duty commercial trucking sector would achieve widely promised climate benefits only if widespread emissions of heat-trapping methane across the natural gas value chain are reduced, according to a new study coauthored by researchers from Environmental Defense Fund (EDF) and published in the journal Environmental Science & Technology.

Penske plans to further introduce alternative fuels into its wider customer base in tandem with a grant from the U.S. Department of Energy.

Results published by the Canadian General Freight Index indicate that the total cost of ground transportation for Canadian shippers increased by 2.2 percent in February when compared with January results.

National average spot truckload rates drifted downward amid weaker demand during the week ending April 18, according to DAT Solutions, which operates the DAT network of load boards.