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There are 8 fare zones in the public transport system, 6 of them in the Madrid Region and 2 in Castilla-La Mancha.
Each ticket must always be used within its validity zone. Each zone includes the previous ones, that is to say, a Travel Pass for B2 zone may be used in A, B1 and B2 zones, except for interzone travel passes B1-B2, B2-B3, B3-C1 and C1-C2, exclusively valid for the loaded zones in the card.