Abstract
A 12-month study of drug involvement in fatally injured drivers and pedestrians was recently completed in the province of ontario. In that study, the appropriate fluid and tissue specimens from some 980 victims were tested for approximately 80 different psychotropic and related substances. Drugs, other than alcohol or in combination with it were detected in 116 drivers. The present paper contains the results of an analysis of the prevalence of various substances among these drivers together with an examination of the characteristics of the victims and the circumstances surrounding their collisions. For the covering abstract of the conference see irrd 259956.