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TUCSON, Ariz. — Pony.ai, a developer of self-driving cars based in China and Silicon Valley, will begin testing its autonomous vehicles in Tucson, with trained safety drivers behind the wheel, in a partnership with Pima Community College.

Saying they had a “moral obligation,” California regulators could soon ban the sale of diesel big rigs by 2040.

The Pennsylvania Turnpike is jumping into solar energy production to power its maintenance and office buildings with a long-term goal: using solar-generated power to electrify portions of the toll road so electric vehicles can charge as they travel.

WASHINGTON — Treasury Secretary Janet Yellen will deliver an economic speech Sept. 8 at Ford Motor Co.’s Rouge Electric Vehicle Center in Dearborn, Mich.

WASHINGTON — The White House said President Joe Biden will tour the Detroit Auto Show next week — his first return to the show since 2017.

Revenue from Louisiana’s gasoline tax is insufficient to meet the state’s road and bridge needs, Legislative Auditor Michael Waguespack said in a report issued Sept. 6.

With the proposal to toll nine major interstate bridges to pay for their replacement or rehabilitation now dead, a panel of Pennsylvania state senators set out to explore what happens next to address these costly but necessary transportation projects.

Supervisors in Scott County, Iowa, plan to pen a letter opposing the merger of two North American rail companies that’s expected to drastically increase train traffic along the Mississippi River there.

The Port of Los Angeles had its best-ever July, officials announced Aug. 17, outpacing the same month last year, which was the previous record, by 5%.