The Austrian Federal Railways (BBB) use about 60 Diesel Desiro trains called `BB 5022`. These are based on Deutsche Bahn`s 642 series, but have additional safety equipment. [Clarification needed] The desiro HC train`s versatile design offers a large number of seating and an unfettered floor surface. Trains are available in single and double-stage configuration. The first Desiro UK electric units were ordered by South West Trains for the short and long-haul london Waterloo to Alton, Basingstoke and on the Hampshire/Dorset coast to replace its EMUs Mark 1 Slam-Door, which were to be replaced by the end of 2005, most of which were over 40 years old and did not meet modern health and safety requirements. They have become two different classes, both of which use the 750 V DC train network. One hundred and ten units of four 450-car cars were commissioned in 2003 and 45 units of five series 444 for long-distance transport were commissioned in 2004. An additional contract was awarded for an additional 17 units of the 450 series, with trains in service in late 2006 and early 2007.    Our ultra-advanced and intercity trains enable rapid, reliable and cross-border interconnection of urban centres. The train`s communications network integrates Ethernet-based communication systems, the train control network (TCN) and the train management network (TON). The Desiro HC is a member of the Desiro family of diesel trains / EMU. More than 2,000 Desiro trains are currently in service worldwide. Powerful, modern, punctual and environmentally friendly: you can count on the Desiro family – the train of the future solution for light, regional and commuter rail transport.
The first ScotRail ordered 22 three and 16 four-car series 380 E2.  The start of service began on December 8, 2010. They replaced the Juniper series 318 and 334 fleets on the Inverclyde Line and the Ayrshire Coast Line. The 322-series trains on the North Berwick Line have also been replaced by the new units. In April 2010, the company signed a framework contract for up to 200 Desiro ML trains.  The first trains of this type were put into service in 2015 with the Vienna S-Bahn, which has been described as Cityjet. Siemens delivers 115 Desiro City trains for a total of 1,140 regional trains (order volume of approximately 1.8 billion euros). In April 2015, Siemens announced that it had received a tender for the construction of a fleet of 82 Desiro HC trains for the Rhein-Ruhr Express (RRX) project in Germany.
The Slovenian railways operate 30 Desiro electric units, called Desiro EMG 312 SR 31E. They are used as commuter stations on electrified lines, i.e. from Ljubljana to Koper, Jesenice (via Kranj), Maribor and Dobova (via Zidani Most). Ecological, calm and test-proof: The Desiro Verve was designed for efficiency. It provides excellent recycling properties, reduced energy consumption, less noise and greenhouse gas emissions – based on careful design analyses and iterations to dramatically reduce train weight. Passengers can easily board the train through its wide doors, while the continuous entrance to the 760 mm high platforms offers passengers bicycles, strollers and wheelchairs. Siemens provides maintenance for the entire life of the vehicles, which is more than 30 years. About 98.5% of trains are recyclable. Swiss federal railways operate two-stage or two-tiered EMUs in the SBB RABe 514 series.