This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Ansaldo STS USA (ASTS USA) brings more than 125 years of innovation and leadership experience to the design, manufacture and service of signaling automation and control systems for the railroad and mass transit market. ASTS USA products and control systems are in operation by every Class I railroad in North America, and by numerous rail transit operators in North America and around the world. Products include MicroLok® II wayside control systems, M-Style switch machines, solid state code transmitter relays, timer relays, track circuits, Digitair® EOT systems, gate mechanisms, MicroCab® cab signaling systems and various carborne, highway crossing and signaling systems. ASTS USA is a leading provider of dispatching and operation control centers and has regional service locations to accommodate maintenance and repair needs.