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Commercial truck drivers in Mexico who go through a new Arizona cross-border program are less likely to be flagged for safety violations when they show up at ports of entry, officials said.

Apple Inc. has expanded its California self-driving test fleet to 27 vehicles as it accelerates efforts to catch up with competitors such as Alphabet Inc.’s Waymo.

A second federal safety agency has opened an investigation of an accident in which a Tesla car on “Autopilot” rammed into a parked fire truck.

Massachusetts Gov. Charlie Baker on Jan. 23 created the commission through an executive order and appointed his former chief of staff, Steve Kadish, as the chairman.

General Motors is in a race to be the first company to mass produce self-driving cars, but a recent crash with a San Francisco motorcyclist has illustrated the tricky challenge of assigning blame when an autonomous vehicle gets in an accident.

A glitch in the federal drug and alcohol clearinghouse final rule requires state licensing agencies to check the database for drivers who have flunked their drug tests, but fails to give state agencies the regulatory authority to take action by downgrading or declining to issue a commercial driver license to those drivers.

Michigan State Police motor carrier officers are teaming up with officers in neighboring states to raise awareness of human trafficking.

U.S. drivers are still cautious — but they’re getting used to the idea of self-driving cars.

For the third successive year, Atlanta’s five-level stack interchange known as “Spaghetti Junction,” where Interstates 285 and I-85 north intersect, is again the most congested freight bottleneck in the nation, according to new research conducted by the American Transportation Research Institute.

Maine Gov. Paul LePage took a step Jan. 17 toward regulating a rapidly emerging automotive technology that in the not-too-distant future could find self-driving cars, trucks and buses operating on Maine roads.