Westinghouse Air Brake Technologies Corporation (Wabtec), doing business as Wabtec Corporation, is a provider of technology-based equipment and services for the global rail industry. The Company primarily serves the freight rail and passenger transit industries. The Company provides its products and services through two principal business segments: the Freight Segment and the Transit Segment. The Freight Segment primarily manufactures and services components for new and existing locomotive and freight cars, supplies railway electronics, positive train control equipment, signal design and engineering services, builds switcher locomotives, rebuilds freight locomotives, and provides heat exchangers and cooling systems for rail and other industrial markets. The Transit Segment primarily manufactures and services components for new and existing passenger transit vehicles, typically subway cars and buses, builds new commuter locomotives and refurbishes subway cars.