The US National Highway Traffic Safety Administration (NHTSA) has opened an investigation into 2.4 million Tesla vehicles equipped with the automaker’s Full Self-Driving (FSD) software, following reports of four crashes, including a fatal incident. According to CBC News, this preliminary evaluation aims to examine whether these vehicles pose a safety risk. NHTSA initiated the investigation after four crashes involving Tesla vehicles with FSD engaged during low-visibility conditions, such as sun glare, fog, or airborne dust. One of these crashes resulted in a pedestrian fatality, while another involved a reported injury.