Amazon’s Zoox unit won U.S. approval on Wednesday for limited commercial deployment of its novel steering-wheel-free robotaxis, a first for the autonomous ride industry, the U.S. auto safety agency said Thursday. Additional Reporting RequirementsThe agency said it determined the vehicle is as safe as an equivalent vehicle meeting federal motor vehicle safety standards that are being waived. Related: US Takes Aim at Autonomous Car Mishaps in Safety Rulemaking Push“We have the ability to pull the exemption if we see major safety issues,” Morrison said. Tesla has started producing a Cybercab that lacks human controls, but it has not outlined its path for regulatory approvals. Following the letter, Zoox recalled its fleet of 105 autonomous vehicles to update the software, saying they might not detect heavy smoke, particularly in active emergencies.