Samenvatting
This paper summarizes the findings of a number of studies performed by General Motors Research Laboratories in which the double pair comparison method was used to determine the effectiveness of protection devices in preventing occupant fatalities. It is found that lap/shoulder belts are 43 plus or minus 3% effective in preventing fatalities to car front seat occupants, lap belts are 18 plus or minus 9% effective in preventing fatalities to car rear- seat occupants, and motorcycle helmets are 27 plus or minus 9% effective in preventing rider fatalities.