people involved in accidents who are years or older incur a relatively higher share of accident cost in accidents involving pedestrians and motorised vehicles than other age groups figures and figure a the difference arises both because relatively more elderly people are victims in such accidents and because the injuries they sustain tend to be more severe than the injuries of younger victims the total percentage of accident cost from such accidents accounts for of total accident costs for the elderly but only of the total cost for all other people affected by traffic accidents