On Easter Monday, the return traffic from Ticino northbound is always very heavy, the trains are reinforced to maximum capacity and additional relief trains run. This is the Eurocity 320 from Milano via Chiasso-Lugano-Bellinzona-Arth Goldau-Zug to Zürich. With 200 km/h, the two highspeed trains "Giruno" RABe 501 # 008 "Ceneri" and # 009 "Zürich" of the SBB in multiple control, forming a 404 meter long train with 844 seats in first and second class, are leaving the 57 kilometer long Gotthard Base Tunnel (GBT) in Rynächt near Erstfeld.