Knorr-Bremse is a company manufacturing braking systems and supplying additional sub-systems. It operates 2 divisions: Rail Vehicle Systems and Commercial Vehicle Systems. The Rail Vehicle Systems division provides braking, intelligent entrance, heating, ventilation, and air conditioning (HVAC), auxiliary power supply, windscreen wiper, and driver assistance systems, as well as control components, and friction material for mass transit and long-distance rail vehicles. The Commercial Vehicle Systems division offers braking systems, electronic brake controls, driver assistance and air supply systems for trucks, buses, trailers, and agricultural machinery, as well as torsional vibration dampers for diesel engines.