I was driving 50mph in a 50mph zone and the Forward Collision Avoidance system activated emergency braking, bringing vehicle to an immediate halt in a lane of traffic. Conditions were wet from earlier rainfall; however, no hazards or vehicles were immediately in front of me. This activation tugged on my seatbelt and chest and collarbone resulting in pain while the vehicle lunged me forward. Due to the immediate breaking of my vehicle, vehicles behind me were forced to quickly break or make a lane change. If the vehicles behind me were not responsive enough, I wouldâve been struck by a vehicle going 40-50mph. The problem has not been reproduced or inspected; however, this has happened 3-4 other times with no attention to the matter.