A US auto safety agency said on Friday it is reconsidering a landmark rule from the administration of former president Joe Biden requiring nearly all new cars and trucks to have advanced automatic emergency braking systems by 2009.
The National Highway Traffic Safety Administration (NHRSA) said it would delay the effective date to March 20 to give the new Donald Trump administration time to further review the regulation.
The Alliance for Automotive Innovation, representing General Motors, Toyota, Volkswagen and other carmakers, last week filed suit to block the rule, saying the regulation is "practically impossible with available technology".
The group asked the US court of appeals for the District of Columbia to overturn the rule, saying the requirement that cars and trucks must be able to stop and avoid striking vehicles in front of them at up to 100km/h is unrealistic. Last year it unsuccessfully asked NHTSA last year to reconsider the rule.
The rule is one of the most far-reaching US auto safety regulations in recent years. NHTSA said the rule will save at least 360 lives annually and prevent at least 24,000 injuries as traffic deaths spiked after the Covid-19 pandemic.
In November last year Alliance CEO John Bozzella, who has written to Trump urging him to reconsider the regulation, called the regulation "wrong on the merits. Wrong on the science. Really a disastrous decision".
Congress directed NHTSA in the 2021 infrastructure law to establish minimum performance standards for automatic emergency braking systems, which use sensors such as cameras and radar to detect when a vehicle is close to crashing and then automatically apply brakes if the driver has not done so.
In 2016, 20 carmakers voluntarily agreed to make automatic emergency braking standard on nearly all US vehicles by 2022. By late 2023, all 20 had equipped at least 95% of vehicles with the braking systems, but critics said there is no way to ensure effectiveness without government regulations.
In May 2023 the NHTSA proposed requiring vehicles to comply in three years, but carmakers are getting five years.
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