This paper reviews the research literature on the relationship of drugs, alcohol, and driving among young people, university students, and a group of young criminals. The data show that young people use drugs more than adults do, and that they drive under the influence of drugs or alcohol, especially at night, more often than adults do, and consequently young people are more vulnerable to accidents due to drug use than are adults. The writer then considers possible countermeasures against drinking and driving such as limitations on drinking by young people, the amount of permissable liquor consumption, and limitations on driving such as forcing speed limits during certain periods of the day. The writer concludes that few countermeasures have demonstrated their effectiveness; nevertheless, he argues that it is essential that more effort be placed on the development of effective countermeasure programs and that those programs in existence be more effectively evaluated. (Author/SE)