WHILE DOING NORMAL CITY DRIVING IN EARLY MORNING, I DROVE OVER METAL PLATES ON THE STREET WHICH HAD OCCASIONALLY IN THE PAST CAUSED MY AUTOMATIC BRAKING SYSTEM (CMBS) TO WARN ME TO BRAKE AS IF IT SENSED A HAZARD, BUT NEVER APPLIED THE BRAKES FOR ME. TODAY WHEN GOING OVER THESE PLATES, THE CMBS APPLIED FULL BRAKES TO THE CAR WITHOUT MY TOUCHING THE BRAKE PEDAL MYSELF, BRINGING MY CAR TO AN ABRUPT STOP. THE CAR BEHIND ME UNDERSTANDABLY REAR-ENDED ME. LUCKILY JUST VERY MINOR DAMAGE SINCE THE CAR BEHIND ME MOSTLY STOPPED, BUT THIS IS OBVIOUSLY A VERY SERIOUS PROBLEM. WILL TAKE TO DEALERSHIP IN A COUPLE DAYS FOR INSPECTION. I WAS UNDER THE IMPRESSION THIS SYSTEM COULD NOT BE DISABLED, BUT AFTER LOOKING ONLINE I FOUND IT COULD BE, SO I DISABLED IT TODAY. WILL LIKELY NOT USE IT IN THE FUTURE AS I SEE THE HARM FROM IT TO GREATLY OUTWEIGH THE POTENTIAL BENEFITS. HERE ARE THE WEATHER CONDITIONS AT THE TIME OF THE INCIDENT: IT WAS ABOUT 6:00 AM, BEFORE SUNRISE. THERE WAS SLIGHT SLEET/SNOW, BUT IT WAS VERY MINIMAL. ROAD CONDITIONS WERE NORMAL ASIDE FROM THE METAL PLATES FROM CONSTRUCTION ON THE STREET.