Dying Light 2 takes place over the ruined cityscape of Villedor, and to get around it as quickly as possible, you’ll want to know how to unlock fast travel as soon as you can.
Unfortunately, the actual act of unlocking fast travel is locked off until a set point in the story of Dying Light 2. It isn’t a case of simply walking up to a point on the map and interacting with it, as you’ll need to return power to Villedor before you can do anything with the Metro stations.
Source – eurogamer.net