WASHINGTON (Reuters) -Tesla told U.S. regulators that all of its answers to questions on the safety of its robotaxi deployment in Texas are confidential business information and should not be made public, according to a letter released Monday.

On Friday, the National Highway Traffic Safety Administration said it was reviewing answers given in response to the agency's questions about the safety of its self-driving robotaxi in poor weather among other issues. The agency said Monday that federal law "restricts NHTSA's ability to publicly release what the companies label as confidential." The agency added that "following an assessment of these responses and other relevant information, NHTSA will take any necessary actions to protect road safety."