CAF USA CAF USA is one of the US Rail Transportation market leaders in the design, manufacture, maintenance and supply of equipment and components for railway systems. download Reducing distances (WMV. 7.432KB) Since its inception, CAF stands out for its versatility, flexibility and readiness to adapt to the customers needs, in all areas: Product range: From complete transportation systems (High Speed, Locomotives, Regional trains, Communter trains / Electric Motorcars, Metro Units Trains and Streetcars and light rail trains) and turnkey solutions, to custom-made parts and components.