from their MPV design. SBB acquired a three vehicle two engined train, whilst BLS acquired a four-vehicle, three-engined train (both with one unpowered vehicle). The SBB trains comprise one fire fighting vehicle, one non-powered vehicle with the water/foam supply and breathable air supply, and a rescue vehicle with space for 60 people. The BLS train has an additional rescue vehicle. Both versions are powered by MTU 6H1800 R80 type engines of power. In 2009 an ex-DB CargoSprinter (DB 691-502) machine was used as part of a new train design, named RailXpress – the design used a remote control modified CargoSprinter control car at one end as a control car and for shunting on non-electrified lines. At the other end of the train an electric locomotive (such as SBB Re 420) was used for mainline work, operating trains of at up to . A related design for transportation of construction materials (gravel) also began operation in 2009, named Marti Express Shuttle; the trains consist of a converted ex-DB (Talbot) driving vehicle, 8 intermediate four axle wagons, and an electric locomotive – the train has a carrying capacity of up to . In 2012 SBB ordered 2 additional LRZs for the Gotthard Base Tunnel from a Windhoff / Dräger consortium. In 2015 SBB ordered 35 track maintenance vehicles for delivery from 2017 to 2021. In 2016 SBB ordered 3 additional LRZs from a Windhoff / Dräger consortium, for the CEVA line, Ceneri Base Tunnel, and the Lötschberg and Simplon Tunnels. Taiwan In 2007/8 Windhoff manufactured and supplied six MPV derived trains for infrastructure maintenance work on the Taiwan High Speed Rail line. United Kingdom In the United Kingdom, infrastructure operator Railtrack ordered 25 two-car units in 1998. The first 25 trainsets had only one driving car powered. An additional order for 7 more trainsets was placed in 2000 – these units had both end cars powered giving a top speed of . The vehicles are used for weedkilling, de-icing, and water-jetting and sandite treatment of the railhead. The MPV vehicles have also been proposed for use in revenue earning freight train services; ISO container transportation using a MPV power cars and conventional container wagons was experimentally trialled in 2000; containers were transported from the Port of Southampton to terminals in Birmingham and Barking. and technically successful trials with a two MPV power cars and 7 OTA two-axle timber wagons were carried out