The Class 422 is a series of four-car

electric multiple units An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a number ...

that are a derivative of the

DBAG Class 423 The Deutsche Bahn Class 423 EMU is a light-weight articulated electric railcar for S-Bahn commuter networks in Germany. The train has similar dimensions to its predecessor, the Class 420 EMU, but is significantly lighter and has one large passe ...

. The two inner cars in the set are designated as Class 432 vehicles.

History

The units were commissioned by

Deutsche Bahn The (; abbreviated as DB or DB AG) is the national railway company of Germany. Headquartered in the Bahntower in Berlin, it is a joint-stock company ( AG). The Federal Republic of Germany is its single shareholder. describes itself as the se ...

in 2005. 78 units worth

€ The euro sign () is the currency sign used for the euro, the official currency of the eurozone and unilaterally adopted by Kosovo and Montenegro. The design was presented to the public by the European Commission on 12 December 1996. It consists o ...

343 million were built by

Bombardier Transportation Bombardier Transportation was a Canadian-German rolling stock and rail transport manufacturer, headquartered in Berlin, Germany. It was one of the world's largest companies in the rail vehicle and equipment manufacturing and servicing industry ...

and

Alstom Alstom SA is a French multinational rolling stock manufacturer operating worldwide in rail transport markets, active in the fields of passenger transportation, signalling, and locomotives, with products including the AGV, TGV, Eurostar, Avelia ...

and delivered between March 2008 and October 2010. They are now used in such places as like on the

Rhine-Ruhr S-Bahn The Rhine-Ruhr S-Bahn (german: S-Bahn Rhein-Ruhr) is a polycentric and electrically driven S-train network covering the Rhine-Ruhr Metropolitan Region in the German federated state of North Rhine-Westphalia. This includes most of the Ruhr (and ci ...

which operate in cities like Köln and Düsseldorf as well as the Ruhr area. Deutsche Bahn uses the units on the

network, unlike most S-Bahn Networks which use similar

trains. The inner carriages are called Class 432. Following a timetable change in December of 2019 the units are currently used exclusively on the S1, S4, S5 (occasionally) and S6 lines of the network. {{Germany-rail-transport-stub Electric multiple units of Germany 15 kV AC multiple units Bombardier Transportation multiple units Alstom multiple units