U.S. safety agency expands investigation into Tesla's driver-assistance system

The U.S. National Highway Traffic Safety Administration (NHTSA) has deepened its probe into Tesla's Full Self-Driving (FSD) driver-assistance system. The investigation, now covering about 3.2 million Tesla vehicles, is looking into how the system performs in poor weather conditions and whether its camera-based system is sufficient for safe operation.

This is an upgrade from a previous inquiry, prompted by concerns over crashes. The expanded probe will assess the system's overall safety and performance.