My Tesla was operating with Full Self-Driving (FSD) (Supervised) engaged when it initiated a left turn across the path of an oncoming vehicle traveling in the opposite direction, resulting in a collision. During the incident, FSD was controlling the vehicle's driving behavior and initiated the left turn despite the presence of oncoming traffic. The Tesla collided with the approaching vehicle while executing the turn. I am concerned that the FSD system failed to properly recognize or respond to oncoming traffic, failed to determine whether the left turn could be safely completed, or made an unsafe decision to turn across the path of another vehicle. This incident created a significant safety risk for the occupants of both vehicles. I believe the collision may indicate a safety-related problem involving FSD's intersection handling, left-turn decision-making, detection of approaching vehicles, or collision avoidance capabilities. I request that NHTSA review this incident as a potential FSD safety defect and obtain relevant FSD engagement records, vehicle telemetry, camera footage, steering commands, and collision data from Tesla to determine why the vehicle initiated the left turn into oncoming traffic.