Westinghouse Air Brake Technologies Corporation, doing business as Wabtec Corporation, is a global provider of value-added, technology-based locomotives, equipment, systems, and services for the freight rail and passenger transit industries, as well as the mining, marine and industrial markets. Its Freight Segment primarily manufactures new and modernized locomotives; provides aftermarket parts and services to existing locomotives; provides components to new and existing freight cars; builds new commuter locomotives; supplies rail control and infrastructure products; overhauls locomotives; and provides heat exchangers and cooling systems for rail and other industrial markets. Its Transit Segment primarily manufactures and services components for new and existing passenger transit vehicles, typically regional trains, high speed trains, subway cars, light-rail vehicles and buses. It also specializes in train detection, wayside object control solutions, and axle counting systems.