The national average price for a gallon of diesel tumbled 9.6 cents — its largest drop of the year — to reach $3.922,  according to Energy Information Administration data released May 8.

A shortened planting season and regional fuel shortages led the governors of Nebraska and North Dakota on May 5 to issue 30-day hours-of-service waivers for truckers.

Although U.S. gasoline usage appears to be exceeding year-ago levels as cheaper prices at the pump encourage households to hit the road, cracks have started to emerge in the world’s biggest economy.

The national average price of diesel continued its descent, sliding 6.2 cents to $4.185 a gallon in its seventh straight decline, according to Energy Information Administration data released March 20.

Diesel’s national average price continued to decline, but only by a 1.2-cent dip to $4.282 a gallon, according to Energy Information Administration data released March 6.

Projects that aim to accelerate adoption of electric and fuel cell-powered medium- and heavy-duty trucks along freight corridors in 23 states are earmarked to receive $7.4 million in funding from the U.S. Department of Energy.

An ongoing refinery shutdown has prompted Colorado’s governor to extend a fuel supply chain emergency order enabling commercial vehicles to carry heavier fuel loads on state highways for another month.

American Trucking Associations and the Truckload Carriers Association have asked U.S. Senate leaders to block legislation that aims to eliminate fuel pump labeling requirements for renewable diesel fuel, a move the groups contend would cause confusion for motor carriers regarding what’s being pumped into their trucks’ tanks.

Most of Wyoming’s output of diesel, renewable diesel and biodiesel is sent to other states rather than being used locally.

The U.S. exported a record amount of crude and fuel in mid-October, even as the East Coast grapples with shortages of both diesel and gasoline.