Westinghouse Air Brake Technologies Corporation, doing business as Wabtec Corporation, provides technology-based products and services for the freight rail and passenger transit industries worldwide. The company’s Freight Group segment manufactures and services components for new and existing freight cars and locomotives; builds new switcher locomotives; and rebuilds freight locomotives; supplies railway electronics, positive train control equipment, and signal design products; and provides engineering services, and related heat exchange and cooling systems. This segment offers its products and services to publicly traded railroads; leasing companies; manufacturers of original equipment, such as locomotives and freight cars; and utilities. The company’s Transit Group segment manufactures and services components for new and existing passenger transit vehicles, including subway cars and buses; builds new commuter locomotives; and refurbishes subway cars. It provides its products and services to public transit authorities and municipalities, leasing companies, and manufacturers of subway cars and buses. The company’s principal product portfolio consists of positive train control equipment and electronically controlled pneumatic braking products; railway electronics, including event recorders, monitoring equipment, and end of train devices; freight car truck components; draft gears, couplers and slack adjusters; air compressors and dryers; heat exchangers and cooling products for locomotives and power generation equipment; track and switch products; railway braking equipment and related components; friction products, including brake shoes and pads; commuter and switcher locomotives; rail and bus door assemblies; accessibility lifts and ramps for buses and subway cars; and traction motors. Westinghouse Air Brake Technologies Corporation was founded in 1869 and is headquartered in Wilmerding, Pennsylvania.