Szyca, M. i in. 2025. Analysis of the boarding and disembarking process time on the example of the Pesa 122NaB tram operated in the city of Bydgoszcz. Polish Journal of Technical Issue. 1, 1 (lip. 2025). DOI:https://doi.org/10.37660/PJTI.2025.25.1.4.