Random meeting of two SBB trains, running in opposite direction through the long curve with up to 130 km/h. The Bombardier built "FVD" RABDe 502 # 010 "Ville de Genève" is running the IR 3270 of the line IR 13 from Chur via St.Gallen to Zürich, while the Siemens built "DTZ" RABe 514 # 048 is on the line S 24 train 20452 from Zug via Thalwil-Zürich HB-Zürich Airport-Winterthur to Weinfelden.