I WAS GOING 40MPH WHEN I HAD TO BREAK FOR A YELLOW LIGHT WITH PLENTY OF TIME TO STOP, AS I WAS HITTING THE BRAKES MY CAR BEGAN TO SKIP AND CONTINUE TO PRESS FORWARD AND DID NOT STOP UNTIL I HIT THE BACK OF SOMEONE'S VEHICLE. THE BRAKES DID NOT WORK AND I WAS NOT GOING SO FAST THAT I COULDN'T HAVE HAD A SMOOTH STOP.