Samenvatting
Based on a detailed examination of accidents, the author compares the measured efficiency of the three- point seatbelt with that for a case- by- case evaluation of the air cushion; the result obtained is discussed, firstly as a function of the accidental or technical parameters which govern it and of the perspectives on the wearing of the seatbelt; then taking economic factors into account, as a function of the cost efficiency ratio of these two devices.