Knorr-Bremse AG, together with its subsidiaries, develops, produces, and markets brake systems for rail and commercial vehicles and other safety-critical systems worldwide. It 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. The company offers leasing, holding, logistics, and media and IT services. The company was founded in 1905 and is headquartered in Munich, Germany. Knorr-Bremse AG operates as a subsidiary of KB Holding GmbH.