[3-wheeled and 4-wheeled all-terrain vehicles: unstable and dangerous vehicles]

We present the results of a questionnaire completed by 526 victims of accidents involving three- and four-wheeled all-terrain vehicles. All victims were treated at the emergency departments of 10 regional hospitals in Quebec. In 70% of cases, the vehicles overturned. Two thirds of victims were injured in accidents without collision, typically involving overturns on level ground or hills. We suggest accident reconstruction research as a means of identifying engineering solutions as one element in an injury control approach.