A device within an automobile comprises or includes a wireless
communications controller which, upon detection of impact, attempts to
establish a wireless communications link to each of any counterpart
wireless communications controllers which are within vehicles also subject
to a recent impact, and therefore presumably involved in the collision.
Vehicle identification information and information collected regarding the
collision, such as vehicle speed, location, direction of travel, impact
direction and magnitude, point of impact, etc., are automatically
exchanged between vehicles involved in the collision and may be later
retrieved from either vehicle, preserving objective information for
accident reconstruction by police and insurance companies.
