I JUST PULLED OUT OF PARKING LOT ONTO ROAD KNOWING THAT WITHIN THE NEXT 200 FT I WAS APPROACHING STOP LIGHT I WAS DOING ABOUT 15-20 MPH. I SAW THE CAR STOPPED FOR LIGHT AND STEPPED ON MY BRAKES MY CAR NEVER ATTEMPTED TO SLOW DOWN OR STOP UNTIL IT IMPACTED WITH REAR OF VEHICLE STOPPED AT LIGHT. 2ND ACCIDENT: AS CROSSING INTRESECTION A CAR PULLED OVER INTO MY LANE I APPLIED BRAKES AND CAR DID NOT ATTEMPT TO SLOW DOWN OR BRAKES WORK MY CAR DID NOT STOP UNTIL IT IMPACTED WITH REAR OF VEHICLE IN FRONT OF ME.3RD ACCIDENT: AS PULLING OFF FROM GREEN LIGHT APPROACHING TRAFFIC AT NEXT STOP LIGHT CARS STARTED BRAKING AT WHICH TIME I APPLIED MY BRAKES I WAS WELL WITHIN STOPPING DISTANCE IF MY BRAKES HAD WORKED. THEY WENT ALL THE WAY TO THE FLOOR AND THE CAR STARTED SLIDING AND IT WAS AS IF THE CAR PICKED UP SPEED AFTER HITTING MY BRAKES WITH BOTH FEET. MY SEAT BEALT DID NOT WORK (I HIT STEARING WHEEL) NOR DID THE AIR BAG MY CAR DID NOT SLOW DOWN OR ATTEMPT TO UNTIL IMPACT WITH OTHER VEHICLE REAR BUMPER. UPON IMPACT I HIT THE STERRING WHEEL AND MY KNEE HIT THE DASH.I HAVE MAJOR DAMAGE TO MY VEHICLE THE FRONT BUMPER IS TOTTALLY GONE , THE RADIATOR BLEW UP MY CAR WAS SMOKING AND THE HOOD IS BOWED UP. THE CAR WAS NOT DRIVABLE . WHEN THE TOW TRUCK ARRRIVED AND ACTUALLY SAW THE IMPACT. HE QUICKLY STATED " THE BREAKS DID NOT WORK IN YOUR CAR DID THEY? " I WAS VERY SURPRISED BUT HE COULD ACTUALLY TELL MY CAR DID NOT STOP OR ATTEMPT TO STOP UNTIL IMPACT WITH REAR OF OTHER VEHICLE. AND HE STATED