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Knight-Swift Transportation Holdings Inc. lost almost a fifth of its market value July 26, marking the biggest drop in four years, after sales fell because of a lack of drivers.

In a federal lawsuit filed July 19, the Western States Trucking Association alleges that the California Supreme Court’s new “ABC test” requirement for deciding if a contractor should be an employee “forces virtually all independent contractors to become employees to those they choose to contract or work with.”

Landstar System reported record second-quarter net income of $62.5 million, or $1.51 a share, a rise of 67% from $37.5 million, and 89 cents per share, in the same period a year ago.

UPS Inc. rose the most in almost seven years as international sales surged and the courier’s ambitious investment plans started to win over investors.

Covenant Transportation Group reported a positive second quarter, recording greater revenues and income as it moved forward on its purchase of Landair Holdings.

Knight-Swift Transportation Holdings reported greater second-quarter revenue and improved income across most of its divisions as it continued the coordination of the two firms after their merger last September.

A group of Chinese startups is accelerating efforts to get autonomous vehicles onto roads in the world’s biggest auto market, a country its American peers from Alphabet Inc.’s Waymo to General Motors Co.’s Cruise may find tough to crack.

FedEx Express will begin operating daily cargo flights out of San Bernardino International Airport in October, under terms of a new 10-year agreement.

Norfolk Southern Corp. on July 25 reported record second-quarter earnings.

Highways won’t cure Washington state’s traffic woes and preventing congestion is impossible, said Roger Millar, head of the Washington state Department of Transportation.