Stadt-Express
The Stadt-Express (SE), formerly "City-Bahn (CB)", is a train category in Germany, that links conurbations with the outer reaches of the surrounding countryside. The name literally means "City Express". Deutsche Bahn no longer offers Stadt-Express services, but the Rhein-Main-Verkehrsverbund tariff association still ordered them until December 2016. As a consequence, there were Stadt-Express lines in the RMV-area, but they were categorized by the Deutsche Bahn as either Regionalbahn or Regional-Express. Stadt-Express lines were renamed to Regionalbahn or Regional-Express or were discontinued. The last remaining one is running from  Leipzig to Saalfeld/Saale operated by Abellio Rail Mitteldeutschland. Concept. The "Stadt-Express" has the role of linking cities to those areas outside their immediate surroundings; it therefore stops at every station in the outlying region. However, in the 'core' area of the conurbation, served by other local passenger trains like the "S-Bahn" and "Regionalbahn" trains, it runs faster, like a "Regional-Express", and therefore only stops at the most important stations. While there are no more Stadt-Express services in Germany, several Regionalbahn or Regionalexpress services still follow the concept: For example, the RE 22 ("Eifel-Express") stops  from Cologne Messe/Deutz to Kall only at important stations, thereafter it stops at every station on the way to Gerolstein, like a "Regionalbahn" train, a service not provided on this section of the line. After Gerolstein it changes its designation to "RB 22" and runs officially as a Regionalbahn to Trier. Not all "Stadt-Express" routes followed this concept exactly; several services stopped at all stations even in the core area. The "Stadt-Express" category was classified as a local service ("Nahverkehr") and therefore could be used without supplementary fare.