Tricity's (Gdańsk, Sopot, Gdynia) urban transport can be divided into three main transport organisers:
1. Public Transport Authority of Gdańsk (ZTM Gdańsk)
2. Public Transport Authority of Gdynia (ZKM Gdynia)
3. TriCity Rapid Urban Railway (SKM Trójmiasto)
Each of them operates on separate principles, operates independently of each other and has their own tickets which are not accepted in other companies (except for metropolitan tickets).