Amazon’s Zoox unit has won U.S. approval 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 on Thursday. Zoox said that the National Highway Traffic Safety Administration’s decision gives the company federal approval to begin charging for rides, and that it will soon begin charging for service, first in Las Vegas, with additional markets to follow as it completes various state requirements. The exemption granted by the agency from federal rules requiring human controls, first reported by Reuters, marks a milestone for companies developing robotaxis from the ground up, rather than modifying conventional cars under safety regulations written long before self-driving technology emerged. Along with Zoox, whose electric carriage-style vehicle has two rows of inward-facing seats and a top speed of 75 miles per hour, others such as Tesla and Alphabet’s Waymo are racing to expand autonomous ride-hailing services in the U.S. NHTSA Administrator Jonathan Morrison told Reuters that Zoox had received clearance to commercially deploy up to 2,500 vehicles in each of the next two years. Zoox currently carries passengers in parts of Las Vegas and San Francisco as part of testing. The exemption would allow Zoox to charge them fees, subject to state and local approvals. The agency said it determined the vehicle is as safe as an equivalent vehicle meeting federal motor vehicle safety standards that are being waived. Zoox cannot sell any of the vehicles to the public. “We can say pretty clearly that the systems in place on the Zoox exceed the equivalent performance requirements of a compliant vehicle,” Morrison said in an interview. “But we still want to make sure that the automated driving system will operate appropriately.” As part of the exemption, NHTSA is placing additional reporting requirements on Zoox