Highspeed pantograph test run between Flüelen and Claro through the 57 kilometer long Gotthard Base Tunnel (GBT), with up to 176 km/h (109,4 mph), 10 % above the regular maximum velocity of this trains. "Flirt 3" from StadlerRail for the Südostbahn (SOB) RABe 526 # 4 and # 002 in multiple traction, at Rynächt coming from the GBT.