Regional rail in Germany

thumb|Diagram comparing typical rapid transit (U-Bahn, left) and S-Bahn (right) networks. The S-Bahn combines suburban branches into a high-frequency corridor across the city centre. Actual layouts vary by city. S-Bahn ( , ; ) is a type of hybrid commuter rail and rapid transit service, originating in German-speaking countries. In general, S-Bahn systems link suburbs with the city centre at moderate speeds, while continuing across the urban core over a central high-frequency corridor where multiple lines converge, where they provide a rapid means of travel across the city. The name S-Bahn deri

thumb|RB train (DBAG Class 642|Class 642)

thumb|German Regional-Express train operated by Deutsche Bahn near [[Minden]] thumb|German Regional-Express operated by National Express Germany|National Express in [[Cologne]]

rural tramway in Saxony, Germany

thumb|upright|An Interregio-Express on the Black Forest railway (Baden) at [[Singen station]] The Interregio-Express (IRE) is a train category for local public transport railway services operated by the Deutsche Bahn (DB). Until the December 2024 timetable change, it was available in the German states of Baden-Württemberg, Bavaria, Saxony, Saxony-Anhalt and Berlin, as well as on the High Rhine Railway line, which passes through Switzerland). The IRE category is since only used for the , a train that operates between Berlin and Wrocław, with other IRE services now operating as Regional-Express

public transit system in North Rhine-Westphalia