"Flirt" RABe 523 # 065 of the SBB is running the S 2 service 21243 from Baar Lindenpark via Zug-Arth Goldau to Erstfeld, between Schwyz and Brunnen on the Gotthard line.
"Flirt" RABe 523 # 065 is running the S 1 service 21126 from Sursee via Lucerne-Rotkreuz-Zug to Baar, near Cham Alpenblick.