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WASHINGTON — Nationwide policy for autonomous cars and trucks has the potential of facilitating the flow of freight while improving safety, according to a senior executive at UPS Inc. on Feb. 12.

In a move sure to shake up the regional less-than-truckload freight market in the Northeast and Mid-Atlantic states, New England Motor Freight filed for bankruptcy Feb. 11 and said it intends to wind down all of its trucking operations.

Walmart Inc. is big in almost every way — 4,755 stores, 1.5 million employees and $380 billion in revenue in the United States alone. But one part of the world’s largest retailer remains minuscule. “We have a tiny ad business,” CEO Doug McMillon told investors in October. “It could be bigger.”

Efforts by dry van truckload carrier U.S. Xpress Enterprises to boost profits by improving the efficiency of its trucking operations are paying off.

Forward Air Corp. turned in its best-ever fourth quarter and full year in 2018 with profits topping expectations and revenue increasing across most of its freight service lines.

Old Dominion Freight Line Inc. on Feb. 7 reported strong fourth-quarter and full-year results.

Mullen Group reported higher revenue and profits in the fourth quarter of 2018 despite a “market meltdown” caused by falling oil prices that curtailed demand for transportation services as the year ended.

Werner Enterprises produced record revenue and higher profits in the fourth quarter of 2018 as a strong economy fueled demand for both its trucking and logistics services.

For-hire carrier ArcBest reported an increase in revenue but a decline in net income for the fourth quarter of 2018.

Patriot Transportation Holding, the Jacksonville, Fla.-based parent of Florida Rock & Tank Lines, reported higher profits and revenue in the first fiscal quarter of 2019.