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Senior senators recently urged the Federal Communications Commission to approve limited access to a frequency band of spectrum for transportation operations.

The National Highway Traffic Safety Administration has denied a petition filed by the Commercial Vehicle Safety Alliance asking regulators to drop a requirement for trucks and trailers to display a legible certification label on their rear impact guards.

Volvo Group North America will pay a civil penalty of as much as $130 million under an arrangement with the National Highway Traffic Safety Administration.

Senior Democrats in the Senate are pressing for transportation safety enhancements as the White House celebrated the anniversary of a $1 trillion infrastructure law’s enactment.

With continuing concerns about speeding on the nation’s highways, the National Highway Traffic Safety Administration plans to conduct a survey-research effort to ask 1,500 drivers with one or more recent speeding tickets why they speed — and why others with no violations don’t speed.

Traffic fatalities on U.S. roads declined in the second quarter, halting an almost two-year rise even as Americans are driving more.

The National Highway Traffic Safety Administration is operating without a Senate-confirmed leader again, leaving a void atop the agency tasked with preventing road injuries and deaths even as the number of fatalities moves sharply in the wrong direction.

Traffic fatalities on U.S. roads grew 7% in the opening three months of the year, reaching the highest levels for the first quarter since 2002.

Steven Cliff, the head of the National Highway Traffic Safety Administration, is stepping down from his post for a leadership role at the California Air Resources Board.

DETROIT — Two crashes involving Teslas apparently running on Autopilot are drawing scrutiny from federal regulators and point to a potential new hazard on U.S. freeways: The partially automated vehicles may not stop for motorcycles.