2025-09-01 00:00:00 Transport GZM is the official application of the Upper Silesian-Zagłębie Metropolis - one of the largest organizers of public transport in Poland. It will help you travel around 56 municipalities of Upper Silesia and Zagłębie Dąbrowskie. Thanks to this application, you will plan and pay for your journey. In our application: You will create an account and define the discounts you are entitled to without visiting the Passenger Service Point.