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

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.

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.

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.

Get ready for a little bit more pain at the pump this summer. Crude oil prices are at the highest level in more than three years and expected to climb higher, pushing up gasoline prices along the way.

California state officials announced April 26 that $2.4 billion from increases in the gas tax and vehicle fees will be spent on dozens of transit projects, including work to prepare Southern California for the 2028 Summer Olympics.

In a Central Valley, Calif., barn decked out in red, white and blue, dairyman and state Senate candidate Johnny Tacherra drew cheers from a crowd of fellow farmers when he said he opposes the California Legislature’s hike on gas taxes and vehicle fees.

Republican activists said April 24 that they have collected at least 830,000 signatures for an initiative to repeal recent increases in California’s gas tax and vehicle fees, more than enough to qualify the measure for the November ballot.

The U.S. average retail price of diesel fuel rose 2.9 cents to $3.133 a gallon as the benchmark West Texas Intermediate crude oil price closed at $68.93 a barrel April 23, a jump of $5.92.