Newest vehicle for SBB infrastructure, built by Windhoff company at Rheine/Germany. In 2015, the SBB ordered 35 of this diesel multi purpose vehicles Tm 234.4 "Dart" (Diesel Arbeits- und Rangier Traktor/diesel tractor for work and shunting), with a 520 kW prime mover and a smaller 130 kW diesel, maximum velocity is 100 km/h. Tm 234 # 402 is standing in Winterthur freight yard.
