The Chikushino Police Department has a program in which driving instructors test the driving skills of volunteers who are under the influence of alcohol. According to a CNN article, testing impaired drivers is part of a drunk driving awareness campaign. In Ohio, we do not use drunk driving exams to determine if drivers are impaired by alcohol or drugs. Instead, we use field sobriety tests and blood/breath/urine tests. Those tests are circumstantial evidence that a person was operating a vehicle under the influence.