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Sixteen clinically normal individuals .drove in an optical driving simulator in both a non-alcohol and an alcohol condition. In both the 0 mg% (.00%) and the 90 mg% (.09%) blood alcohol level conditions, each subject was given 60 trials in which he was required to make and execute a decision to pass or to continue following a lead car. Times available to safely complete a pass and vehicle speeds were presented in a random manner. During the alcohol condition, subjects not only attempted and completed significantly more passes but also experienced more accidents. Results of this experiment suggest that the effects of moderate levels of blood alcohol must be examined not only as they affect perceptual motor skills, but also as they may more subtly affect risk-taking behavior and decision processes involved in operating a motor vehicle.
In this study of the effects of moderate blood alcohol levels (65 mg.%= .065%) on driver alertness, clinically normal individuals drove in an optical driving simulator for uninterrupted periods of 2 hours. During the alcohol session, subjects exhibited significantly slower reaction times, and indicated additional deleterious effects of the alcohol upon performance capacity. Results of this study suggest that the effects of moderate levels of blood alcohol must be examined not only as they affect simple perceptual-motor skills, but also as they may more subtly affect time-sharing capabilities and the various complex decision-reaction processes involved in operating a motor vehicle.
In this study of the effects of moderate blood alcohol levels (65 mg.%= .065%) on driver alertness, clinically normal individuals drove in an optical driving simulator for uninterrupted periods of 2 hours. During the alcohol session, subjects exhibited significantly slower reaction times, and indicated additional deleterious effects of the alcohol upon performance capacity. Results of this study suggest that the effects of moderate levels of blood alcohol must be examined not only as they affect simple perceptual-motor skills, but also as they may more subtly affect time-sharing capabilities and the various complex decision-reaction processes involved in operating a motor vehicle.