“…Other traffic safety innovations for other drugs. Observations were made about the person's general appearance, pulse rate, orientation in time and space, ataxia (Romberg's test), speech, finger and hand movements, and reactions of pupils to light, as well as some simple psychomotor tests (Penttila and Tenhu 1976). After these tests were made, the physician concluded whether the individual showed none, slight, moderate or a high degree of being under the influence of alcohol.…”