R4 (RER Vaud)

Route map
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R4
R4
	A Le Brassus-bound S22 at Lausanne in 2021; the S22 was folded in to the S4 in December 2022
Overview
Predecessor	S2; S22;
First service	11 December 2022
Current operator(s)	Swiss Federal Railways
Route
Termini	Le Brassus; St-Maurice
Stops	34
Distance travelled	97.9 kilometres (60.8 mi) (Vallorbe–St-Maurice); 115.9 kilometres (72.0 mi) (Le Brassus–St-Maurice);
Average journey time	1 hour 40 minutes (Vallorbe–Bex); 2 hours 17 minutes (Le Brassus–Bex); 4 minutes (Bex–St-Maurice);
Service frequency	Hourly
Line(s) used	Simplon line
Route map
Route map
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The R4 is a railway service of RER Vaud that provides hourly service between Le Brassus and Bex in the Swiss canton of Vaud. A limited number of trains continue from Bex to St-Maurice. On weekdays, a section of the train operates from Le Day to Vallorbe. Swiss Federal Railways, the national railway company of Switzerland, operates the service. The service was previously known as the S4.