 They are used extensively in Switzerland and in Spain, in the latter country to transport standard gauge vehicles on broad gauge lines.They are also still in use at Nordhausen on the Harz Narrow Gauge Railways to transport limestone wagons from the narrow gauge to the DB system.Until the 1990s the "Rollbock" sidings at Wernigerode were used every day to transport goods to and from the various metallurgical factories attached to the Harz Narrow Gauge Railways in the immediate area.