Zürich Seebach railway station
Trains on the S6 provide a half-hourly connection to Zürich Hauptbahnhof station, taking 12 minutes for the journey via the southern connector and Oerlikon station. In the opposite direction, S6 trains continue to Baden station, taking 28 minutes for the journey. The station also sees significant through freight traffic, most of which takes the Furttal line in order to avoid passing through central Zürich, using the northern connector onto or off the Zürich–Winterthur line.
London Post Office Railway
Postal Telegraph and Telephone (Switzerland) () opened the Post-U-Bahn (underground railway) in Zürich in 1938. It ran between Zürich Hauptbahnhof and the Sihlpost (), Zürich's main post office. The track gauge was 60 cm, and the small electric railcar, which could carry 250 kg of mail, collected power from wires between the tracks. Operations ceased on 11 October 1980 when a rubber-tired system replaced the train.