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WASHINGTON — Harmonization among states on road laws relating to capacity would vastly improve interstate trucking, according to industry experts.

Clean Energy Fuels Corp. announced that French oil and gas company Total S.A. has become its largest stockholder and will underwrite a leasing program meant to accelerate the use of natural gas fuel in North American heavy-duty trucks.

The U.S. average retail price of diesel fuel surged 6.8 cents to $3.239 a gallon, the eighth straight week that trucking’s main fuel has gone up in price, according to the weekly report from the U.S. Department of Energy’s Energy Information Administration on May 14.

A tentative deal on U.S. biofuel policy struck at the White House would allow year-round sales of higher-ethanol gasoline in exchange for possible policy changes to rein in compliance costs for refiners.

As trucking fleets prepare for the availability of all-electric, plug-in Class 8 tractors, they are evaluating existing power capabilities at terminal locations and working through what’s needed for charging infrastructure to support these vehicles.

A move to curtail emissions produced by cargo ships and cruise liners could in a few years put new pressure on prices and supplies of diesel fuel.

LONG BEACH, Calif. — Roush CleanTech unveiled its all-electric technology in a Ford F-650, marking an expansion of its alternative-fuel market beyond propane autogas and compressed natural gas.

LONG BEACH, Calif. — Trillium CNG has changed its name to Trillium, a move that reflects the company’s full-service offerings in the alternative-fuels industry and a partnership with California-based EV Connect, a provider of electric-vehicle charging solutions.

LONG BEACH, Calif. — Peterbilt Motors Co. displayed its all-electric Model 579 day cab tractor at the Advanced Clean Transportation Expo, which was held April 30-May 4.

The U.S. average retail price of diesel fuel rose 1.4 cents to $3.171 a gallon, the seventh straight week the trucking industry’s main fuel has increased in price, according to the weekly report from the U.S. Department of Energy’s Energy Information Administration.