Westinghouse Air Brake Technologies Corporation provides technology-based locomotives, equipment, systems, and services for the freight rail and passenger transit industries worldwide. The company operates in two segments, Freight and Transit. The Freight segment manufactures and services components for freight cars and locomotives; builds, rebuilds, upgrades, and overhauls locomotives; supplies railway electronics, positive train control equipment, and signal design and engineering services; services locomotives and freight cars; and provides heat exchange and cooling systems, and components and digital solutions. It serves publicly traded railroads; leasing companies; manufacturers of original equipment; and utilities. The Transit segment offers components for new and existing passenger transit vehicles, such as regional and high speed trains, subway cars, light-rail vehicles, and buses; refurbishes subway cars; and provides heating, ventilation, and air conditioning equipment, as well as doors for buses and subways. This segment serves public transit authorities and municipalities, leasing companies, and manufacturers of subway cars and buses. The company also provides electronically controlled pneumatic braking products; freight car trucks; draft gears, couplers, and slack adjusters; air compressors and dryers; track and switch products; railway and freight braking equipment and related components; friction products; access and platform screen doors; pantographs; energy measuring systems; auxiliary power converter and battery charging products; antifire systems; passenger information systems and CCTV; signaling and railway electric relays; sanitation systems; window assemblies; accessibility lifts and ramps for buses; and electric charging solutions for buses and electric ferries. In addition, it offers freight locomotive overhaul, modernizations, and refurbishment services. The company was founded in 1869 and is headquartered in Pittsburgh, Pennsylvania.