Abstract
Previous papers have already shown that a global assessment of the injury risk needs to take into account not only the victims inside a given vehicle but also the victims outside due to the vehicle's aggressiveness. New analyses have described all the phenomena, in absolute figures and as percentages. It appears for example that the injury risk is higher in accidents occurring between heavy cars than for accidents between lighter cars. An attempt is made to distinguish between the effects of car structural stiffness and the effects of car weight. Consequences are drawn concerning present trends in car design on the one hand and conflicting environmental and safety requirements on the other hand. (A)