Three indices of alcohol involvement were measured. The first, the number of drivers (police reported) involved in fatal accidents who had consumed alcohol, was a direct measure. The second and third, the number of fatal accidents involving a single vehicle and the number of nighttime fatal accidents, were surrogate measures. Three corresponding measures of fatal accidents not involving alcohol ("normal" drivers involved in fatal accidents (police reported), multiple vehicle fatal accidents, and daytime fatal accidents) were derived to control on general road safety trends. Evidence indicates that both per capita consumption and general road safety trends are significant contributors to all three measures of alcohol involved fatalities. 2 tables and 35 references. (Author abstract modified)