Abstract
A study of the frequence of car exhaust as a cause of accidentaldeath in the united states from 1968 to 1984 showed that the accidental death rate from car exhaust has declined during the same periodduring which the toxicity of car exhaust has been reduced through the imposition of emission controls. However, in great britain, wherethere are no emission controls on cars, the accidental death rate from car exhaust has risen slightly over the same period. Thus, the introduction of emission controls on cars to reduce pollution of the environment seems to have had incidental beneficial effects on mortality from accidental poisoning from car exhaust. (A).