Additional reporting requirementsThe agency said it determined that Zoox vehicles are as safe as comparable vehicles meeting federal motor vehicle safety standards that are being waived. As part of the exemption, NHTSA imposed additional reporting requirements on Zoox, including reporting crashes and incidents where vehicles stop improperly on roads. Safety concerns remainZoox's approval follows years of efforts to commercialise its robotaxi technology under regulations written before autonomous vehicles became widespread. Regulators are attempting to expand autonomous vehicle technology while ensuring public safety. Following the warning, Zoox recalled its fleet of 105 autonomous vehicles to update software after discovering they might fail to detect heavy smoke, particularly during active emergencies.