"Flirt" RABe 524 # 117 of the TILO is running the Regio Express 4321 from Erstfeld to Bellinzona and Lugano over the Gotthard mountain line above Wassen.
"Flirt" RABe 524 # 117 of TILO is running the Regio Express 4325 from Erstfeld to Lugano over the Gotthard mountain line through the Wattinger curve at Wassen.