AFTER STOPPING AT A RED LIGHT, IN THE CITY OF TUCSON, ARIZONA, I TURNED RIGHT ON A GREEN LIGHT AND HEARD A LOUD BANG COMING FROM THE FRONT OF MY CAR. I DID NOT KNOW WHAT HAD HAPPENED. THE CAR WAS NOT GOING VERY FAST SINCE I WAS TURNING FROM A DEAD STOP. I COASTED INTO THE SERVICE STATION ON THE RIGHT SIDE OF MY CAR IN ORDER TO PARK THE CAR. WHEN I TRIED TO APPLY THE BRAKES NOTHING HAPPENED. PLACED MY RIGHT FOOT ON THE BRAKE PEDAL TWICE AND THE BRAKES DID NOT RESPOND. I COASTED INTO THE BACK OF A TRUCK THAT WAS PARKED. TWO WITNESSES TOLD ME THAT THE DRIVER OF A TRUCK HAD RUN A RED LIGHT AND HIT ME. THE POLICE WERE CALLED, BUT WOULD NOT MAKE A REPORT. IN TUCSON, AZ, UNLESS TRAFFIC IS BLOCKED OR SOMEONE IS HURT THE POLICE WILL NOT RESPOND TO AN ACCIDENT. THIS TOOK PLACE DURING DAYLIGHT AROUND 7:15 AM. THE BRAKES WORKED LATER AT THE REPAIR SHOP. THEY DID NOT WORK IMMEDIATELY AFTER THE I WAS HIT.