Westinghouse Air Brake Technologies Corporation, doing business as Wabtec Corporation, is a provider of equipment, systems, digital solutions and value-added services for the freight and transit rail industries, as well as the mining, marine and industrial markets. Its segments include Freight and Transit. The 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. The Transit Segment primarily manufactures and services components for new and existing passenger transit vehicles, such as regional trains, high speed trains, subway cars, light-rail vehicles and buses; supplies rail control and infrastructure products including electronics, signal design and more.