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California environmental regulators are aggressively moving forward with plans to require significant reductions in nitrogen oxides and particulate matter emissions for heavy trucks, improvements in “real time” on-board diagnostics, and lengthening the “useful life,” durability and warranty periods for heavy trucks.

If the United States decides to deploy a slate of sanctions that it is said to have drafted against the Latin American nation, American refiners would be forced to cease purchases. That may mean more supply becomes available for the OPEC producer’s other big customers: China and India.

WASHINGTON — Members of the Transportation Research Board’s Truck Size and Weight Committee said they continue to face stiff headwinds to garner public and political support for heavier and longer trucks, despite evidence that demonstrates the potential for reducing carbon emissions and increasing cargo efficiency.

When policymakers kick off debate on “pay-fors” for a long-term infrastructure plan, the vehicle-miles-traveled funding approach that seems to be gaining bipartisan support in Congress is expected to play a major role.

The U.S. average retail price of diesel dropped 1.1 cents to $2.965 a gallon for the week of Jan. 21, despite an increase in crude oil prices to $53 per barrel, or $3 higher than a week before.

Colorado moved to boost electric-car sales by taking the first step toward adopting a zero-emission-vehicle mandate patterned after one in California that’s under threat from the Trump administration.

Some of the world’s most conservative companies are starting to experiment with cleaner fuels and cutting-edge technologies to meet new standards starting next year that mandate steep cuts of sulfur emissions from oceangoing ships.

U.S. factory production expanded in December by the most in 10 months, ending the year stronger than expected thanks to a surge in motor-vehicle output and gains across a range of other goods.

Tesla, recognizing as imperative its ability to produce a cheaper electric car, told employees Jan. 18 that it must cut 7% of its workforce.

Propelled by the shale-oil boom, the U.S. is already producing more crude than either Russia or Saudi Arabia, who until recently vied for the top spot. By midyear America will go one better.