I HAVE BEEN INVOLVED IN 2 CAR ACCIDENTS WHERE I REAR ENDED BOTH CARS DUE TO BRAKE FAILURE. ONE OF THOSE WAS TODAY. IN BOTH SITUATIONS, WE WERE AT A RED LIGHT AND THE CAR BEFORE ME ACCELERATED BECAUSE THE LIGHT CHANGED AND SUDDENLY STOPPED. I ALSO ACCELERATED NOT EVEN REACHING 10 MPH AND I HAD TO JAM THE BREAKS. I WAS AT A REASONABLE DISTANCE WHERE WITH PROPER BREAKS I WOULD HAVE STOPPED SOON ENOUGH AND NOT HIT THE CAR, BUT UNFORTUNATELY IN BOTH CASES MY BRAKE PEDAL SANK IN A LITTLE FURTHER AND VIBRATED. THE CAR CONTINUED TO MOVE FORWARD AND HIT THE CAR. BECAUSE IT WAS A SUDDEN STOP, TIRES WOULD HAVE SCREECHED BECAUSE OF THE JAMMING OF THE BREAKS, BUT THAT REALLY DIDN'T HAPPEN AND THE CAR JUST KEPT GOING.