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.
Weinberg Tunnel
The Weinberg Tunnel () is a railway tunnel in the Swiss city of Zürich. The tunnel runs from the western approaches to Zürich Hauptbahnhof railway station, east under the station and city centre before turning north and surfacing on the southern approach to Zürich Oerlikon railway station, and allows trains running between east and west to pass through Zürich without reversal. It includes a new set of underground platforms at Zürich Hauptbahnhof, and carries twin standard gauge () tracks electrified at 15 kV AC 16 2/3 Hz using overhead catenary.