Federal safety investigators have sent Tesla a detailed list of questions on its upcoming robotaxi service as part of an investigation into how the

The NHTSA (National Highway Traffic Safety Administration) has asked Tesla to answer an extensive list of inquiries by June 19 regarding its robotaxi service’s June launch, including how the self-driving tech performs in low-visibility conditions.

U.S. auto safety investigators asked Tesla to answer questions on its plans to launch a paid robotaxi service in Austin, Texas, in June, in order to assess how the electric vehicle maker's cars with full self-driving technology will perform in poor weather.