Environmental aspects of the impact of the technical condition of motor vehicles on environmental pollution

The article presents selected aspects related to the influence of toxic components of exhaust gases from vehicle transport vehicles on environmental pollution and human health. The paper describes the quantitative structure of motor vehicles that are operating in Poland. The structure of used passenger cars that were imported from abroad and first registered in Poland was presented. The procedure for periodic control tests in exhaust emission diagnostic stations is also described. The results of the study allowed to distinguish a group of vehicles that did not meet the limits of pollution established by the legislator.