In sum, vehicle was traveling at 35mph with no obstructions or vehicles in the front of my vehicle and forward collision warning activated, bringing vehicle to a complete stop. Breaks squealed and tire rubber burned onto pavement. Seatbelt clenched torso, leaving bruise on collar bone. Another occurrence was similar in speed, with no obstacles or vehicles in front of mine. The forward collision warning began beeping but not displaying any visuals or breaking vehicle.