The tariff area of the Verkehrsverbund Berlin-Brandenburg (VBB) includes the federal state of Berlin and the state of Brandenburg with its administrative districts and independent cities of Brandenburg, Cottbus, Frankfurt (Oder) and Potsdam.
Berlin and the surrounding regions are divided into fare zones a, b and c gegliedert.
Fare zone Berlin a includes the city center of Berlin, including the S-Bahn-Ring.
Fare zone Berlin b begins outside the S-Bahn ring and reaches to the city limits.
Fare zone Berlin c includes both the outskirts of Berlin and the city of Potsdam.