Westinghouse Air Brake Technologies Corporation produces technology-based equipment, systems, and services for the freight rail and passenger transit industries worldwide. They operate through two segments, Freight and Transit, serving publicly traded railroads, leasing companies, manufacturers of original equipment, public transit authorities and municipalities. The company provides a wide range of products from air compressors and dryers to window assemblies and offers services such as freight locomotive overhaul, modernizations and refurbishment services.