IANA is North America's leading industry trade association representing the combined interests of the intermodal freight industry. IANA's membership roster of over 1,000 corporate members includes railroads—Class I, short-line and regional; water carriers and stacktrain operators; port authorities; intermodal truckers and over-the-road highway carriers; intermodal marketing and logistics companies; and suppliers to the industry such as equipment manufacturers, intermodal leasing companies and consulting firms. IANA's associate (non-voting) members include shippers (defined as the beneficial owners of the freight to be shipped), academic institutions, government entities and non-profit associations
The Transportation Intermediaries Association (TIA) is the professional organization of the $162 billion third-party logistics industry. TIA is the only organization exclusively representing transportation intermediaries of all disciplines doing business in domestic and international commerce. TIA is the voice of transportation intermediaries to shippers, carriers, government officials and international organizations. TIA is the United States member of the International Federation of Freight Forwarder Associations (FIATA).