The S21 is a regional railway line of the S-Bahn Zürich on the Zürcher Verkehrsverbund (ZVV), Zürich transportation network, and is one of the network's lines connecting the cantons of Zürich

Canton of Zürich

The Canton of Zurich has a population of . The canton is located in the northeast of Switzerland and the city of Zurich is its capital. The official language is German, but people speak the local Swiss German dialect called Züritüütsch...

 and Zug

Canton of Zug

The Canton of Zug is one of the 26 cantons of Switzerland. It is located in central Switzerland and its capital is Zug. With 239 km² the canton is one of the smallest of the cantons in terms of area. It is not subdivided into districts.- History :The earlier history of the canton is...

.

Route

The line runs from Zug

Zug

Zug , is a German-speaking city in Switzerland. The name ‘Zug’ originates from fishing vocabulary; in the Middle Ages it referred to the right to ‘pull up’ fishing nets and hence to the right to fish.The city of Zug is located in the Canton of Zug and is its capital...

 and heads for Zürich Hauptbahnhof, stopping by Thalwil

Thalwil

Thalwil is a municipality in the district of Horgen in the canton of Zürich in Switzerland. As of 2010 its population was of 17,189.-History:...

. Apart from rush-hour time, it runs only between Zug and Thalwil.

Stations

• Zug
  Zug
  Zug , is a German-speaking city in Switzerland. The name ‘Zug’ originates from fishing vocabulary; in the Middle Ages it referred to the right to ‘pull up’ fishing nets and hence to the right to fish.The city of Zug is located in the Canton of Zug and is its capital...
  
  
• Baar
  Baar, Switzerland
  Baar is a village in the canton of Zug in Switzerland.-Geography:Baar has an area, , of . Of this area, 55% is used for agricultural purposes, while 24.5% is forested...
  
  
• Sihlbrugg
  Sihlbrugg railway station
  Sihlbrugg is a railway station in the village of Sihlbrugg in the Swiss Canton of Zurich.The station is a junction point between the Swiss Federal Railways line from Zug to Zurich Hauptbahnhof via Thalwil, and the Sihltal Zürich Uetliberg Bahn line to Zurich via Sihlwald...
  
  
• Horgen Oberdorf
  Horgen Oberdorf railway station
  Horgen Oberdorf is a railway station in Switzerland, situated in the town of Horgen. The station is located on the Zürich to Lucerne railway line and is served by lines S21 and S24 of the Zurich S-Bahn....
  
  
• Oberrieden Dorf
  Oberrieden Dorf railway station
  Oberrieden Dorf is a railway station in Switzerland, situated on the banks of Lake Zurich in the town of Oberrieden. The station is located on the Zürich to Lucerne railway line and is served by lines S21 and S24 of the Zurich S-Bahn....
  
  
• Thalwil
  Thalwil railway station
  Thalwil is a railway station in the municipality of Thalwil in the Swiss Canton of Zürich.The station is located on the Zürich to Lucerne main line. To the Zurich side of the station, the Zimmerberg Base Tunnel diverges from the original main line, whilst on the Lucerne side is the junction point...
  
  
• Zürich Enge
• Zürich Wiedikon
• Zürich Hauptbahnhof

Rolling stock

All services are operated by Re 450 class

SBB-CFF-FFS Re 450

The Re 450 is a four axle electric locomotive, used by Swiss Federal Railways on S-Bahn services in Zürich. Under the old Swiss class system, they would have been known as Re 4/4V. They are usually found working with fixed formations of three double-deck passenger carriages, the rear-most of which...

 locomotives pushing or pulling

Push-pull train

Push–pull is a mode of operation for locomotive-hauled trains allowing them to be driven from either end.A push–pull train has a locomotive at one end of the train, connected via some form of remote control, such as multiple-unit train control, to a vehicle equipped with a control cab at the other...

 double-deck passenger carriages.

See also

• Rail transport in Switzerland
  Rail transport in Switzerland
  The railways of Switzerland include and narrow gauge .*Network size: 5,063 km*standard gauge: , of which is electrified.*narrow gauge: , of which is electrified...
  
  
• Trams in Zürich