Visual perception represents the most important process of gathering information from the environment while driving. It is the result of complex processes of collecting information from the visibility spectrum and interpreting it. There are numerous factors that can influence the ultimate outcome of visual perception, either enhancing or reducing it. One such factor that will be discussed further in this study is alcohol. Alcohol consumption reduces the field of vision and also impairs the driver`s cognitive abilities. Depending on the amount of alcohol consumed, its effects on an individual can vary. The study will be conducted using a simulator with „drunk glasses“ to determine how a ceratin amount of alcohol affects a driver in terms of visual perception. The research focuses on young drivers up to the age of 30, as they are the most significant consumers of alcohol who operate vehicles. The goal of this type of research is to demonstrate how smaller amounts of alcohol (0,4 do 0,8) affect an individual and the level of danger they pose while driving. The research is being conducted on speed and lateral position. After conducting the research, the results show that, on average, the participants drive below the prescribed speed limit, but there are differences observed between the results among the groups. Regarding the lateral position, no significant deviations from the average have been noticed.