Zmiany w strukturze taboru komunikacji tramwajowej w Polsce w latach 2004–2022

The article presents the process of changes in the structure of the tram transport fleet in Poland from the moment of joining the European Union, i.e., from 2004, to 2022. Basic information about Polish enterprises providing tram transport was presented. The structure of passenger rolling stock in individual cities was described. The author attempted to discuss and define the basic processes related to the changes in the structure of the rolling stock and to present statistical data covering the period in question. This issue was analysed on the example of 15 Polish tram transport systems (along with the description of the process of financing with EU funds). The main aim of the article was to show the dynamics of changes in the rolling stock structure in individual tram companies in Poland.