sentences:  It runs from Petershausen station to Erding station via Dachau, Laim, central Munich, Munich East and Markt Schwaben.The line is operated at 20-minute intervals between Dachau and Markt Schwaben.One train an hour continues from Dachau to Altomünster and the other two continue from Dachau to Petershausen so that the gap between trains alternates between 20 and 40 minutes between Dachau to Petershausen.