The Railway Supply Institute (RSI) is the premier trade association for the rail supply industry, representing the nation's leading companies involved in the manufacture of products and services in the freight car, locomotive, maintenance-of-way, communications and signaling, and transit industries. Since its founding in 1908 RSI and its predecessor organizations have delivered comprehensive marketing, government relations, business development, and standards and technology services to its membership and advocated exclusively on behalf of supplier interests in multiple industry coalitions, legislative bodies and regulatory organizations.