Abstract
CONCERN about the effects of health on the ability to drive safely goes back to the early years of the century, with warnings in 1904 about the hazards of alcohol and legislation in 1939 to regulate driving by persons with epilepsy. The general impression in the first half of the century was that alcoholism contributed to few of the alcohol-related crashes and that social drinking was the preponderant hazard. By the mid-1960s, numerous studies had clearly documented the role of alcohol in highway crashes, especially those resulting in serious injury or death.1 There is now a fairly wide consensus that . . .