Polydrug effects and traffic safety

This paper addresses the topic of polydrug effects and road safety in the most generic sense, examining, first, data on the role of alcohol in road crashes involving young adults and, then, data pertaining to the role of drugs other than or in addition to alcohol. Section II reviews the evidence pertaining to alcohol and road crashes involving youth; the following one (Section III) examines drugs other than alcohol, and Section IV reviews the data on multiple drugs.