The regulator is especially concerned about how Tesla's system handles unexpected poor weather during a ride and the safety protocols in place. Tesla CEO Elon Musk has said safety will be a top , The US National Highway Traffic Safety Administration (NHTSA) is reviewing Tesla's responses to its concerns about the safety of its self-driving robotaxis in poor weather conditions. The review , U.S. highway safety regulators are examining Tesla's responses concerning the safety of its self-driving robotaxi technology under poor weather conditions. This assessment is happening as Tesla plans to initiate limited testing in Austin, Texas. The probe covers 2.4 million vehicles with full self-driving capacity., As Tesla Inc. TSLA gears up for the launch of its Robotaxi service in Austin, Texas, this weekend, U.S. highway safety regulators are closely examining the company’s safety protocols. The , By David Shepardson WASHINGTON (Reuters) -U.S. highway safety regulators are reviewing answers Tesla (NASDAQ:TSLA) gave in response to the agency’s questions about the safety of its self driving robotaxi in poor weather, the agency said on Friday, ahead of plans to deploy the vehicles as soon as this weekend. Reuters reported Friday that Tesla has sent invitations to a small group of people , WASHINGTON :Tesla has responded to a letter the National Highway Traffic Safety Administration sent last month asking questions about its plans to deploy its self driving robotaxi, the agency said .