<div class="htmlview paragraph">The number of accident analyses involving lateral (side-on) impacts is steadily increasing. An accident simulation test procedure that is applicable worldwide must first be established in order to significantly improve the safety features of vehicles.</div> <div class="htmlview paragraph">Factors to be considered in studying lateral impacts are: the mass, structural design, and rigidity of the vehicles involved in the collision; the point and angle of impact; impact speeds; vehicle interior and design; and the use of restraints.</div>