On the Arth section class BDhe 2/4 railcars, built by SLM / SAAS and numbered 11 and 12 arrived in 1949, being joined by No.13 in 1954 and No.14 in 1967. These were joined by class BDhe 4/4 No.15 in 1982. Class Bt driving trailers followed the railcars, No.21 and 22 in 1958, No.23 in 1960 and Nos. 24 and 25 with the railcars in 1967 and 1982 respectively. These vehicles are liveried in blue/white. It is common, on light traffic days, for the railcars to operate without trailers.