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Three of the major U.S. transportation safety agencies are without permanent leaders as the U.S. contends with toxic railway spills, near-collisions on runways and rising traffic deaths.

DETROIT — A company that makes air bag inflators that have exploded in eight incidents  argued that it can’t say for sure whether its inflators might cause further such incidents.

Ann Carlson, President Joe Biden’s nominee to lead the National Highway Traffic Safety Administration, was recently withdrawn from consideration, the White House announced.

General Motors Co. and Stellantis NV paid a combined $363 million in civil penalties for failing to meet U.S. fuel efficiency standards, according to filings with federal regulators.

DETROIT — The U.S. government is turning up the pressure on ARC Automotive to recall 67 million potentially dangerous air bag inflators.

The U.S. government’s auto safety agency plans to require that all new passenger cars and light trucks include potentially life-saving automatic emergency braking within three years.

ARC Manufacturing could be heading for a legal battle with U.S. auto safety regulators after refusing a request that millions of potentially dangerous air bag inflators be recalled.

As many as 44,887 Navistar trucks are set to be recalled following a National Highway Traffic Safety Administration investigation, the federal agency said April 6.

DETROIT — Nearly 43,000 people died in U.S. traffic crashes in 2021, the highest number in 16 years, with deaths due to speeding and impaired or distracted driving on the rise.

DETROIT — U.S. auto safety regulators have opened an investigation into Tesla’s Model Y SUV after getting two complaints that the steering wheels can come off while being driven.