The aim of the study was to present the possibilities of the construction of the Metropolitan Railway line Gdańsk - Wrzeszcz to be included in the Kościerski corridor - railway line 201. The analysis assumed complementarity with the Kościerski corridor renewal project, which would allow achieving a synergy effect and a unique combination of regional and municipal functions. The study included an analysis of the conditions (variants) for building the Metropolitan Railway line, a multi-criteria analysis of the variants and options for implementing the project, a programme and spatial concept of the selected variant and a public consultation process for the project, a feasibility study and starting materials for preparing a draft plot division design and for developing maps essential for design purposes.
The task of the Pomeranian Metropolitan Railway in the Tri-City will include enabling people from western residential districts of Gdańsk and Gdynia, such as: Witomino, Karwiny, Kack, Fikakowo, Osowa, Morena to have access to quick railway transport, enabling the residents of municipalities located in Wysoczyzna Kaszubska to have quick access to the Tri-City; linking together the centre of Gdańsk and Gdynia, and with Lech Wałęsa Airport in Rębiechowo; and providing access to long-distance and regional passenger railway services to both residents of the "upper terrace" districts and airline passengers.