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.
S5 (ZVV)
Prior to the timetable revision of late 2015, the section of the S5 between Zürich and Pfäffikon operated much as today. However west of Zürich, the trains operated to Oberglatt, where alternate trains continued to either Niederweningen or Rafz. The core of the line ran to a frequency of every half hour, thus providing hourly services to Niederweningen and Rafz. The section between Oberglatt and Niederweningen was also served by an hourly shuttle service numbered S55, that connecting at Oberglatt with the S5 trains that run to and from Rafz.