I HAVE A 2008 TOYOTA PRIUS. WHEN I DRIVE OVER BUMPY SURFACES SUCH AS ROAD COVERS OR POT HOLES WHILE BREAKING, I CAN FEEL MY CAR ACCELERATING MID-BRAKE AND THEN HAVE TO PRESS DOUBLY HARD ON MY BRAKES TO SLOW THE VEHICLE. I WAS IN AN ACCIDENT DRIVING BECAUSE DRIVING OVER SOME BUMPY RAILROAD TRACK CROSSINGS, I HAD TO BREAK BECAUSE THE CAR IN FRONT OF ME STOPPED SUDDENLY. I FLOORED THE BRAKES AND MY CAR CONTINUED TO ROLL RIGHT INTO THE CAR IN FRONT OF ME. I HAVE ALSO CONSIDERED THAT PERHAPS THERE WAS ELECTRICAL INTERFERENCE WITH MY BRAKES CAUSED BY THE RAILROAD CROSSING. *CN