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Maine has adopted legislation that will eventually require heating oil to have the same low-sulfur content as diesel fuel used in trucks, a move some in the oil and trucking industries fear could raise demand and prices for trucking’s main fuel.

California environmental regulators can continue enforcing the state’s transportation refrigeration unit retrofit rule, a federal appeals court has ruled.

LOUISVILLE, Ky. — Navistar Inc. has introduced the ProStar Plus, a lighter, more fuel-efficient version of its ProStar Class 8 tractor.

A new diesel-emissions-reduction program at the Port of New York and New Jersey that will ban pre-1994 trucks beginning in 2011 will be costly and burdensome for motor carriers and comes at a time when fleets are reeling from the recession, state trucking officials said.

FedEx Corp. posted a 146% increase in quarterly net income driven by explosive growth in returns at its air express division and a nearly one-third increase in ground parcel delivery profits, the second-largest company in North American freight transportation said March 18.

Congress should include comprehensive funding policies in the upcoming transportation reauthorization bill both to modernize freight transportation and reduce diesel emissions, an environmental group said in a report last week.

The U.S. retail diesel price average rose another 2 cents to a 16-month high of $2.924 a gallon last week, the fourth straight increase, the Department of Energy reported.

While the air at the Port of Los Angeles is cleaner, the owners of than two-thirds of the 2,200 drayage trucks purchased with $20,000 in port emissions reduction incentive grants face financial penalties because their trucks will not make the required minimum 300 gate moves during their first year of operation, port officials said.

Congress should include comprehensive funding policies in the upcoming transportation reauthorization bill both to modernize freight transportation and reduce diesel emissions, an environmental group said in a new report.