Motor Vehicle Traffic Accidents: (Relevant Definitions)
An accident is defined as an unstabilized situation with at least one harmful event.
An unstabilized situation is a set of events not under human control. It begins when control is lost and ends when control is regained or all persons and property come to rest. Therefore, the time period over which an accident occurs is the same as the time period of the unstabilized situation.
A harmful event is an occurence of injury (to a person) or damage (to property).