Westinghouse Air Brake Technologies Corporation (Wabtec) is a provider of technology-based products and services to freight rail and passenger transit industries. The Company's products are used in locomotives, freight cars subway cars and buses, and other vehicles in United States and other countries across the world. The Company operates through two business segments: the Freight Segment and the Transit Segment. The Freight Segment 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 manufactures and services components for new and existing passenger transit vehicles, such as subway cars and buses, builds new commuter locomotives and refurbishes subway cars.