WHILE DRIVING MY 2009 FORD FUSION AT 25 MPH, I CAME UPON STOPPED TRAFFIC. THE ROAD WAS WET AND A LITTLE UNEVEN AS I WAS CROSSING A SHORT OVERPASS BUT THERE WAS PLENTY OF STOPPING DISTANCE. THE ABS ACTIVATED. I HELD THE BRAKE PEDAL TO THE FLOOR BUT THE BRAKES DID VERY LITTLE TO SLOW THE CAR UNTIL THE CAR RAN INTO THE STOPPED TRAFFIC. AT 25 MPH, THERE WAS NO CONCERN THAT THE CAR WOULD NOT STOP IN TIME EVEN WITH THE ABS ACTIVATED, BUT IT DID NOT. THERE WAS NO SKIDDING OR SLIDING OF THE TIRES. I BELIEVE THAT THE ABS MODULE JUST DID NOT APPLY ENOUGH PRESSURE TO THE BRAKE LINES. I THINK THIS FALLS UNDER PE 16-017.