Test run of 3 Bombardier "Twindexx Swiss-Express" or "FV-Dosto" of the SBB in multiple traction, from Weinfelden to Romanshorn Süd, running through Amriswil, RABe 502 # 404 (IR100), RABDe 502 # 007 (IC200) and RABe 502 # 405 (IR100), forming a 403 meter train.