U.S. stock market anomaly | Tesla (TSLA.US) falls by nearly 3% as the safety of self-driving taxi services is questioned by U.S. regulatory agencies.

According to the Securities Times app, on Thursday, Tesla (TSLA.US) fell nearly 3% to $337.37. On the news front, the U.S. Federal safety Regulatory Agency recently requested Elon Musk to provide detailed explanations on how Tesla's autonomous driving Robotaxi can avoid traffic accidents. It is reported that Tesla plans to pilot Robotaxi services in Austin, Texas next month and gradually expand it nationwide. As the U.S. has not yet established national standards for autonomous driving, regulatory agencies have limited means to monitor Robotaxi with no steering wheel or brake pedal. If Tesla's response is inadequate, the launch of the Austin pilot program may be delayed.