P.A.M. Transportation Services, Inc. (P.A.M.) is a holding company. The Company operates as a truckload dry van carrier transporting general commodities throughout the continental United States, as well as in certain Canadian provinces. It also provides transportation services in Mexico under agreements with Mexican carriers. The Company�s freight consists of automotive parts, expedited goods, consumer goods, such as general retail store merchandise, and manufactured goods, such as heating and air conditioning units. Its wholly owned subsidiaries include P.A.M. Transport, Inc., T.T.X., LLC, P.A.M. Cartage Carriers, LLC, Overdrive Leasing, LLC, P.A.M. Logistics Services, Inc., Choctaw Express, LLC, Choctaw Brokerage, Inc., Transcend Logistics, Inc., Decker Transport Co., LLC, East Coast Transport and Logistics, LLC, S & L Logistics, Inc., P.A.M. International, Inc. and P.A.M. Canada, Inc. Its operations are classified into truckload services or brokerage, and logistics services.