WHILE DEMONSTRATING THE ABS BRAKING SYSTEM ON MOTORCYCLES FOR A NUMBER OF MOTORCYCLE SAFETY INSTRUCTORS (IN A PARKING LOT,) I HAD RIDDEN WITHIN 5 MINUTES A HANDFUL OF SUCCESSFUL ABS DEMO RUNS. I WAS STARTING AT ONE SIDE OF THE LOT, GETTING UP TO 30-40 MPH, AND APPLYING THE BRAKES WITH ENOUGH FORCE FOR THE ABS TO ACTIVATE. DURING THE DEMONSTRATION, AFTER APPROXIMATELY HALF OF A DOZEN SUCCESSFUL RUNS, I DID THE EXACT SAME THING EXCEPT THE ABS FAILED TO ACTIVATE, WHICH RESULTED IN A FRONT TIRE SKID AND A SINGLE VEHICLE CRASH. THERE WAS NO INDICATION FROM THE INSTRUMENTS THAT THE ABS WOULD NOT FUNCTION, NOR WAS THERE A REASON FOR THE ABS TO NOT ACTIVATE. *TR