The effects of alcohol, marihuana and their combination on driving ability.
The combination of marihuana and alcohol yielded significant impairment during a driving test but neither drug alone did.
D000328:Adult; D000428:Alcohol Drinking; D000435:Alcoholic Intoxication / Q000523:psychology; D001143:Arousal / Q000187:drug effects; D001334:Automobile Driving; D006801:Humans; D008297:Male; D002189:Marijuana Abuse / Q000523:psychology*; D011597:Psychomotor Performance / Q000187:drug effects