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The SmartWay Transport Partnership is giving shipper-owned fleets a way to showcase their commitment to energy efficiency and cleaner air.

The National Highway Traffic Safety Administration’s decision to cut the maximum allowed stopping distance for large trucks by 30% will increase truck buyers’ costs somewhat, but will not force a widespread shift to new technology such as air disc brakes, industry groups and manufacturers said.

The U.S. average retail diesel price rose 3.2 cents a gallon last week to $2.528, the first increase in five weeks, the Department of Energy reported.

Our latest little honeymoon with fuel prices likely will end soon, as recent increases in the cost of crude oil work their way down to the retail pump.

Diesel prices have dropped almost 50% since record levels last year, but fleets continue to work on cutting fuel costs, one of their largest expenses.

Trucking groups hailed the decision by the National Conference on Weights and Measures not to proceed with proposals to regulate the temperature of retail fuel at the pump.

Wal-Mart Stores and UPS Inc. have separately pledged to support enterprise-wide reporting of greenhouse gas emissions, underscoring the emerging relevance of the carbon accounting field to motor carriers.

U.S. retail diesel prices dropped 4.6 cents last week to $2.496 a gallon, the Department of Energy reported — the fourth straight decline — but rising crude oil costs will soon lead to a reversal of that trend, a department analyst predicted.