There are many virtues said about the Prussians, but an inclination to excessive comfort is definitely not one of them. While other national railroads had used the quiet, comfortable passenger cars with trucks for some time, the 3-axle compartment cars were standard in Prussia. However, they turned every kilometer of rail travel into a real test. Especially the car frame with the center axles with side play limits regarding speed for express train service. The Prussians therefore also decided to acquire compartment cars with trucks. The many side doors with continuous footboards, as well as the clerestory and a raised brakeman's cab were features of these cars. Regular production began in 1895 and continued until 1920. Overall, more than 3,400 cars were built, always with various class arrangements and structural modifications. More than half were 3rd class cars with 9 compartments and 76 seats on wooden benches. The other cars were for mixed class service with various arrangements of compartments for 1st, 2nd and 3rd class.