The S21 is a regional railway service of the

Zürich S-Bahn The Zürich S-Bahn (german: S-Bahn Zürich) system is a network of rail lines that has been incrementally expanded to cover the ZVV area, which comprises the entire canton of Zürich and portions of neighbouring cantons (Aargau, Glaru ...

of the

Zürcher Verkehrsverbund The ZVV (German language, German abbreviation for Zürcher Verkehrsverbund, translated into English language, English as Zürich Transport Network or Zürich Traffic Network) is a public transportation system. It combines Rail transport, rail, bus ...

(ZVV). The service operates at

peak hour A rush hour (American English, British English) or peak hour ( Australian English) is a part of the day during which traffic congestion on roads and crowding on public transport is at its highest. Normally, this happens twice every weekday: o ...

s between and over the Wettingen–Effretikon railway, supplementing the regular service, which continues west to . The S21 designation was previously used for service from Zürich to over the

Thalwil–Arth-Goldau railway The Thalwil–Arth-Goldau railway is a Swiss railway that acts as a feeder route to the Gotthard Railway (''Gotthardbahn'', GB). It was opened for this purpose on 1 June 1897, with the Thalwil– Zug section owned by the Swiss Northeastern Railway ...

; this is now provided by the .

Route

* The service operates on weekdays during peak hours; there are a total of eight trains in each direction per day. Inbound trains in the morning and outbound trains in the evening bypass . Trains stop at the following stations: * * * * *

History

The S21 designation was previously used for service from Zürich to over the

; this is now provided by the . The current S21 began running with the December 2015 timetable change.

Rolling stock

most services are operated by Re 450 class locomotives pushing or pulling double-deck passenger carriages.

References

External links

* {{Public transport in Zurich Zürich S-Bahn lines Transport in the canton of Zürich