Knorr-Bremse AG, together with its subsidiaries, engages in the development, production, marketing, and servicing of braking and other systems for rail and commercial vehicles worldwide. The company operates in two segments, Rail Vehicle Systems and Commercial Vehicle Systems. The Rail Vehicle Systems segment offers braking systems, entrance and HVAC systems, sanitary systems, coupling systems, digital solutions, smart services for optimizing rail traffic, power electrics, rail computing and communication (RCC)/TCMS, signaling systems, stationary and mobile testing equipment, windshield wiper and wash systems, and extensive aftermarket solutions. The Commercial Vehicle Systems segment provides pneumatic braking systems comprising brake control systems, disk brakes, drum brakes, brake cylinders, valves, and pedal units; steering systems; vehicle dynamics solutions, such as anti-lock braking systems and electronic stability programs; driver assistance systems; automated driving and electronic leveling control; energy supply and distribution systems, including compressors and air treatment products; and engine components and transmission control systems, such as vibration dampers, engine air management, transmission control, and gear/clutch actuation products for trucks, buses, trailers, and agricultural machinery.