TOTAL ABS BRAKE SYSTEM FAILURE WHILE ATTEMPTING TO STOP VEHICLE IN LIGHT TRAFFIC AT LESS THAN 20 MPH ON DRY SURFACE. FIRST ATTEMPT TO BRAKE MET WITH UNDUE BRAKE PEDAL RESISTANCE WITH NO STOPPING ACTION. SECOND ATTEMPT MET WITH UNRESTRICTED PEDAL TRAVEL TO THE FLOOR WITH NO STOPPING ACTION. VEHICLE ONLY STOPPED ON IMPACT. THE DRIVER AND TWO OTHER PEOPLE WERE INJURED.