S-bahn
In German-speaking parts of Switzerland, the frequent town to and from city commuter service known as the S-Bahn in Germany or S-Linien in Switzerland has been built in several cities such as the Zürich S-Bahn and the Basel Regional S-Bahn.
In French-speaking parts of Switzerland, the service is known as the Réseau Express Régional such as in the Léman RER.
Read more about this topic: Rail Transport In Switzerland