Abstract
Selected injury findings show that the rates of occurrence of both fatally and critically injured riders increased substantially from the pre-repeal to both post-repeal periods; the occurrence rates of fatally and critically injured riders were considerably less for helmet users than for non-users; the rates of injury occurrence to the head, neck and face were significantly influenced by helmet use (helmet wearers had a far lower injury rate for all three body locations); the severity of injuries to the head was significantly greater for helmetless riders than for helmeted riders.