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The U.S. average retail price of diesel dropped 4.4 cents to $3.077 a gallon, the U.S. Energy Information Administration reported, as crude oil prices lingered below $50 per barrel.

BILLINGS, Mont. — President Donald Trump’s administration miscalculated the potential benefits of putting better brakes on trains that haul explosive fuels when it scrapped an Obama-era rule over cost concerns, The Associated Press has found. A government analysis used to justify the cancellation omitted up to $117 million in estimated future damages from train derailments that could be avoided by using electronic brakes.

U.S. filings for unemployment benefits decreased for the third time in four weeks, hovering near an almost five-decade low that reflects a robust job market.

The U.S. oil industry is delivering a one-two punch to Middle East producers already reeling from a collapse in prices. A tussle is playing out in the market for so-called light oils, which have a lower sulfur content and are less dense than heavier varieties.

The nation’s ports continued to see steady growth in November cargo volume, as shippers moved goods to the United States from overseas in advance of the holiday shopping season and rushed to get cargo stateside ahead of expected tariffs on shipments from China.

Driverless car startup Zoox Inc. became the first company to win approval to transport members of the public in its driverless test vehicles in California, according to a statement from the California Public Utilities Commission.

Drug use by workers in five sectors of the U.S. economy — including the transportation/warehousing sector — showed significant increases from 2015 to 2017, according to a new analysis of more than 10 million urine drug test results nationally by drug testing firm Quest Diagnostics.

Academics, stakeholders, policymakers and agency officials from every level of government are expected to meet in downtown Washington in January for one of the largest gatherings of the country’s transportation community.

Uber Technologies Inc., which halted its self-driving car program after the death of a pedestrian in March, resumed testing of self-driving cars on public roads in Pittsburgh on Dec. 20, the company said.

The federal government has partially shut down after lawmakers failed to pass a spending bill because of an impasse with President Donald Trump over his demands to fund a wall on the U.S.-Mexico border.