Alcohol is recognized as one of the factors in the occurrence of traffi c accidents, which signifi cantly aff ects the occurrence of accidents and the severity of their consequences. In this paper, the results of the pilot survey present the measures of infl uence of intoxicated drivers on the status of their motor skills and a en on in traffi c. The eff ect of alcohol is simulated using the "drunk glasses" that simulate the eff ects of the alcohol on the human body: reduced alertness, slowed reac ons, confusion, distor on of the visual fi eld, change of distance and depth percep on, narrowing of peripheral vision, poor judgment and decision making, image duplica on, lack of muscle coordina on and the like. Motor skills were tested using the "Vienna test" system which measures the reac on speed, motor skills, a en on, concentra on and the assessment of traffi c situa ons. For the purposes of this study the results of the "Vienna test" were analyzed -a driver without "drunk glasses" and wearing the glasses. Glasses for alcoholic level of 0,6 -0,8 ‰ were used in the study. Through a compara ve analysis obtained by this research we point to the impact that alcohol has on the perceptual skills of drivers.