So that the 4th phase of expansion can be rolled out, various track facilities and stations will have to be expanded. In addition, signalling equipment needs adjusting so that the trains can run at shorter intervals.

These planned infrastructure expansions require the Zurich – Winterthur and Bülach – Schaffhausen high-speed train expansions and the construction of the cross-city link and the Future Development of Railway Infrastructure (FDRI) projects in the ZVV region.

Overview of expansions in the 4th phase of expansion

Overview of expansions in the 4th phase of expansion
Location Project
Au ZH Lengthening the freight passing track
Herrliberg – Feldmeilen Turning track
Illnau Station expansion
Kemptthal, Tössmühle Track change
Knonau Extension of station
Marthalen Moving the station
Niederhasli – Niederweningen Lengthening platforms
Oberwinterthur – Seuzach Signalling equipment
Pfäffikon SZ Track adjustments
Pfäffikon ZH Station expansion
Rangierbahnhof Limmattal (RBL) Turning track for the S-Bahn
Saland Expansion of the station
Sennhof-Kyburg Expansion of the station
Seuzach Raising the height of platform 2
Stammheim Station expansion
Tann – Dürnten Expansion of the station
Thalwil – Ziegelbrücke/Zug Signalling equipment
Winterthur Improvement in performance
Winterthur Seen Lengthening platform 2
Ziegelbrücke Junction
Zürich HB – Altstetten Tracking platform adjustment