Westinghouse Air Brake Technologies Corp is a provider of value-added, technology-based products and services for the freight rail and passenger transit industries, and the mining, marine, and industrial markets. It provides its products and services through two main business segments, Freight and Transit. The company generates maximum revenue from the Freight segment which 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 including electronics, positive train control equipment, signal design and engineering services. Geographically, it generates a majority of its revenue from the United States.