This led at first only to the establishment between 1965 and 1970 of regional commuter services on the east–west axis between Nienburg / Minden, Wunstorf, Hannover Hauptbahnhof (central station), Lehrte and Celle and on the Deister Railway. A further extension was omitted because of disagreement between federal, state and city region governments. In 1984, in preparation for the upgrading of the line between Wunstorf and Hannover, Seelze station was relocated and rebuilt with overtaking tracks.
Between 1965 and 1970, regional commuter services were established along the east–west axis from Nienburg / Minden to Wunstorf, Hannover Hauptbahnhof (central station), Lehrte, and Celle. A subsequent extension was not implemented due to disagreements among federal, state, and city governments. In 1984, Seelze station was relocated and rebuilt with overtaking tracks in preparation for upgrading the line between Wunstorf and Hannover.