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The U.S. average retail price of diesel rose 0.1 cent to $3.043 as oil remained near $63 a barrel amid ongoing uncertainty over a U.S. trade war with China.

Investors of the world’s biggest oil-servicer providers are so far looking past the most punitive round of U.S. sanctions on Russia.

Over and over in their decadeslong war on smog, Southern California regulators have failed to use a powerful tool against ports, warehouses and other freight and logistics hubs that are magnets for air pollution.

Planning cities to better accommodate trucks is one area of study the American Transportation Research Institute will delve into further this year, according to a press release issued by the organization April 2. ATRI’s board of directors recently approved the 2018 top research priorities identified by the institute’s Research Advisory Committee.

As the Trump administration begins to dismantle Barack Obama’s ambitious auto efficiency regulations, California is said to be poised to retaliate by doing something that automakers have feared: de-coupling the state’s rules with those set in Washington.

Guadalupe Road in south Victoria County, Texas, was brand new in August 2016 after the county spent $200,000 to repave it for the first time in decades. But in the last few weeks, it began to crumble and crack, forcing county crews to patch up the deteriorating surface.

Daniel Gage, president of National Gas Vehicles for America, asked lawmakers March 14 for a five-year extension of alternative fuel tax credits and the alternative fueling infrastructure credit.

California and the Trump administration are on a collision course over auto-efficiency regulations that could lead the White House to deploy the nuclear option: revoking the state’s cherished power to set its own limits on air pollution.

The Trump administration’s chief environmental regulator signaled a coming showdown with California, warning the state won’t dictate the future of ambitious automobile fuel economy regulations enacted by the Obama administration.

The U.S. average retail price of diesel fell 1.6 cents to $2.976 as the price of a barrel of crude slipped to $61 as analysts expected U.S. production to continue at a high level. Trucking’s main fuel has seen five consecutive declines totaling 11 cents.