S4 (RER Vaud)
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The S4 is a railway service of
RER Vaud RER Vaud (french: Réseau express régional vaudois) is an S-Bahn network in the canton of Vaud in Switzerland. It is centered on Lausanne and began operating in December 2004. History With the December 2022 timetable change the RER Vaud network ...
that provides hourly service between and in the Swiss canton of
Vaud Vaud ( ; french: (Canton de) Vaud, ; german: (Kanton) Waadt, or ), more formally the canton of Vaud, is one of the 26 cantons forming the Swiss Confederation. It is composed of ten districts and its capital city is Lausanne. Its coat of arms b ...
. A limited number of trains continue from Aigle to . On weekdays, a section of the train operates from to .
Swiss Federal Railways Swiss Federal Railways (german: link=no, Schweizerische Bundesbahnen, ''SBB''; french: link=no, Chemins de fer fédéraux suisses, ''CFF''; it, Ferrovie federali svizzere, ''FFS'') is the national railway company of Switzerland. It is usuall ...
, the national railway company of Switzerland, operates the service.


Operations

The S4 operates every hour between and , using the western end of the
Simplon line The Simplon Railway is a line that links Lausanne in Switzerland and Domodossola in Italy, via Brig. The -long Simplon Tunnel (opened in 1906) is a major part of it. The line between Lausanne and Vallorbe is sometimes considered to form part of th ...
. The S4 makes a limited number of stops between and Aigle. The S4 is paired with the S3 between and Aigle, providing half-hourly service. Both the S3 and S4 provide limited service beyond Aigle to . On weekdays, a section of the S4 operates between Le Day and .


History

The "first" S4 was one of the six original lines of the RER Vaud, then called the Vaud Express Network (french: Réseau express vaudois, REV), when that system was established in December 2004. It ran hourly between Morges and Palézieux. SBB extended the S4 west from Morges to Allaman with the December 2011 timetable change, making local stops. Rush-hour service to Romont began on 10 December 2017. In December 2021, SBB increased the number of rush-hour round-trips between Allaman and Romont from three to six. The RER Vaud lines were substantially reorganized for the December 2022 timetable change. The "new" S4 was a combination of the former S2 and S22, making local stops on the Simplon line between Vallorbe and Lausanne, and limited stops between Lausanne and Aigle, with limited service from Aigle to St-Maurice.


References


External links

* 2023 timetable
Le Brassus–Lausanne
an
Lausanne–St-Maurice
{{RER Vaud RER Vaud lines Transport in the canton of Vaud