Abstract
The road alcohol problems are complicated by the differences between moderate drinkers and alcoholics. The experience of the last 17 years indicates 2 important conclusions: 1- The clinical picture of the moderate drinker at a particular blood level is distinctly different from the appearance and actions of the alcoholic at the same blood level. 2- More than 90% of persons investigated by the police for possible drinking driver violations are in some stage of alcoholism.