Railway coaches of Germany

right|250px|thumb|n-car with 1st and 2nd class sections The n-Wagen ("n-coaches") are a type of passenger coach used by Deutsche Bundesbahn and subsequently Deutsche Bahn. With two double-leafed doors per side to enable a high passenger throughput rate, the coaches were conceived for short dwell times in commuter and regional transit. Succeeding the yl-coaches, 5,000 units were built from 1958 to 1981, with some remaining in service still today.

Railway service of Deutsche Bahn

bilevel rail car

class of European railway coach

The German term Donnerbüchse (plural: Donnerbüchsen, formerly Donnerwagen) means "thunderbox" and is the nickname for the four-wheeled, open, passenger coaches, built from 1921 onwards, that served with the Deutsche Reichsbahn. In contrast to their predecessors, they were made entirely of iron or steel. The name comes from the loud rumbling of these coaches as a result of their lack of damping. Even the immediate forerunners of these wagons were given the name despite their wooden construction. In the early days, they were also called ''Ackermann'sche Donnerbüchse'' ("Ackermann's thunderboxes"