Calibration and Validation of the STISIM Driving Simulator

Inclusion Criteria: * 21-50 years old * Written informed consent * Normal static binocular acuity, corrected or uncorrected * Normal hearing * Social Drinker (average of 7 to 21 alcoholic drinks per week and experience with drinking 4-6 drinks per occasion) * No current or past drug use * Possession of a driver's license for at least 3 years * Be considered as reliable and mentally capable of adhering to the protocol Exclusion Criteria: * Current and past drug use (positive urine drug screen on the presence of amphetamines (including MDMA), barbiturates, cannabinoids, benzodiazepines, cocaine, and opiates) * Positive urine pregnancy screen in women * Present use of psychoactive medication * Positive alcohol breath test * Prior enrollment in the same study * Physical or mental illness * Excessive alcohol use ( \> 21 alcoholic drinks per week) * Excessive smoking (more than 10 cigarettes per day) * Intake of caffeine-containing beverages over 5 glasses per day * Simulator sickness, as determined during the training session