“…Many tranquilizers have been tested experimentally by more than as many re searchers or research groups, as to their effects, alone or in combination with alcohol, on psychomotor skills related to driving. These psychomotor skills range from those as simple as reaction time tests to performance on simulators or in cars on closed-course tracks (41,42,43,44,45,46,47,48). Chlordiazepoxide (Librium®), diazepam (Val ium®), and meprobamate (Miltown®), are all minor tranquilizers, while chlorpromazine (Thorazine®), thioridazine (Mellaril®), trifluoperazine (Stelazine®) and haloperidol (Hal dol®) are major tranquilizers.…”