Standard express train car, 2nd class, type Büe 354, of the German Federal Railways. From the late 1920s to the 1960s, they shaped the image of express and fast trains – the standard express train cars built by the German Reichsbahn Society (DRG) starting in 1928. The majority of the cars were transferred to the German Federal Railways after 1949. With the class reform of 1956, the third class was renamed "second class.".