The six car doubledeck train "MUTZ" RABe 515 # 037 of the BLS, built in 2020 by StadlerRail, is running the IR 2828 of the line IR 17 from Olten via Langenthal, Herzogenbuchsee, Burgdorf to Berne, between Roggwil-Wynau and Langenthal. The BLS took over this line from the SBB in change of timetable december 2020.