NHTSA investigated Zoox after two robotaxis braked suddenly causing motorcyclists to rear-end them
May 13, 2024In May 2024, NHTSA launched an investigation into Zoox after two Toyota Highlanders equipped with Zoox autonomous technology braked unexpectedly, causing motorcyclists to rear-end the vehicles. Both vehicles were in autonomous mode. Minor injuries were reported. Zoox issued a voluntary recall of 258 vehicles in March 2025, deploying software updates to address sudden braking near bicyclists at crosswalks and misjudging approach of vulnerable road users from the rear. NHTSA later closed the probe.