In 1952, in the GDR, VEB Waggonbau Görlitz (formerly Waggon- und Maschinenbau AG (WUMAG)) developed double- and four-part double-deck trains based on LBE vehicles for the Deutsche Reichsbahn. In 1955 Görlitz delivered only twelve examples of the two-piece DB7, 39.9 meters long and weighing 76 tons, later DBz. They had 228 seats and 210 standing room. The four-part, 73.4 meter long DB13s, later DBvs, were represented in the DR fleet with 152 examples. They offered space for a total of 906 passengers. The two- and four-car units were nearly identical, with only the middle cars missing from the two-car units. As with the LBE carriages, two single carriages sat on a Jakobs bogie, the doors were above the bogies. For axle load reasons, especially when used on secondary lines, the Jakobs bogies.
