BRAKING SYSTEM DID NOT FUNCTION CAUSING VEHICLE TO REAR END CAR IN FRONT OF ME WHEN I WAS IN HEAVY AFTERNOON TRAFFIC ENTERING I-565 FROM A DOWNWARD RAMP FROM OVERPASS OVER I-565. MINIMUM DAMAGE TO TOYOTA HIGHLANDER HIT FROM REAR. SIGNIFICANT DAMAGE TO FRONT END OF ROGUE. UNDRIVEABLE. TOWED TO BODY SHOP!