The Association of American Railroads (AAR) is the world's leading railroad policy, research and technology organization focusing on the safety and productivity of rail carriers. AAR members include the major freight railroads, or Class I railroads, of the U.S., Canada and Mexico, as well as Amtrak. Class I railroads represent 67 percent of the U.S. freight rail mileage and 90 percent of freight railroad industry employees. Railroads account for 43 percent of intercity freight volume — more than any other mode of transportation. To learn more about how freight rail works for America, the environment and for you, please visit: www.aar.org.