Samenvatting
The increasing contribution of psychoactive drugs, alone and in combination with alcohol, to the causation of traffic accidents is discussed. Therapeutic use of prescribed psychotrophics, abuse of prescribed psychotrophics, and the abuse of illegal narcotics and hallucinogens, including canabis, are related to impairment of driving skills. The paper is illustrated by results of drug estimations obtained under Queensland traffic legislation over a period of seven years.