Liebherr-Transportation Systems GmbH & Co KG (founded in 1871 as Alex. Friedmann GmbH) is one of the leading manufacturers of systems and components for the global railway industry.

Liebherr-Transportation Systems is part of Liebherr's Aerospace & Transport Technology product segment and is headquartered in Korneuburg (Austria). In the field of transport technology, Liebherr stands for competitive technical solutions in the areas of air-conditioning technology, hydraulic actuation systems for all types of rail vehicles as well as cooling systems and damping cylinders for commercial vehicles.

Liebherr has a technological lead in air-supported air conditioning systems, which use pure air as a refrigerant and therefore do not require any environmentally harmful refrigerants and also require less maintenance than conventional systems. Liebherr also develops environmentally friendly air conditioning systems with low GWP (Global Warming Potential) for rail vehicles using the refrigerants CO2 (R744) and propane (R290). Liebherr is also a leader in active hydraulic systems for braking, track guidance and levelling applications.