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The average price of a gallon of diesel fuel the week of June 6 was 18% higher than it was at the beginning of this year, according to the U.S. Energy Information Administration, and the June 6 price of that fuel in California was 20% higher.

Goodyear Commercial Tire Systems introduced a new drive tire that it said reduces rolling resistance by nearly 10% compared with its predecessor, leading to better fuel mileage.

The first-ever heavy-truck fuel-efficiency proposal has been sent to the White House Office of Management and Budget for review.

Yokohama Tire announced it will implement a price increase of an average of 8% on all of its light and medium commercial truck tires sold in the United States on July 1.

The Environmental Protection Agency last week updated its guidance for certification of heavy-duty truck engines using selective catalytic reduction to reduce emissions, rejecting claims made last year by truck maker Navistar Inc. that the technology can be easily defeated.

U.S. retail diesel prices dipped 0.8 cent a gallon last week, the fifth consecutive weekly decline, as the national average declined to $3.94, the Department of Energy reported.

As drivers and hauling capacity become scarcer, pressure is building for pay increases for truckload fleet drivers that could top 10% by this time next year, according to several experts.

Orders for new Class 8 trucks in North America jumped 85% in May compared with a year ago, and manufacturers said component shortages — particularly axles and tires — were affecting output.