The Höllentalbahn TW 1 seen at Reichenau an der Rax railway station

In 1964 the TW1 and TW2, with the trailers, was given over to the Zillertalbahn , but in 2003 TW1 and a trailer retorned to the hollental. Since the Zillertalbahn used all cars as trailers, an excessive rebuilding was necessary.