P.A.M. Transportation Services, Inc., through its subsidiaries, operates as a truckload transportation and logistics company in the United States, Canada, and Mexico. The company engages in transporting general commodities. Its freight primarily consists of automotive parts, expedited goods, and consumer goods, including general retail store merchandise, as well as manufactured goods, such as heating and air conditioning units. The company also provides brokerage and logistics services, which include transportation scheduling, routing, mode selection, transloading, and other value added services related to the transportation of freight. As of December 31, 2012, it operated a fleet of 1,800 trucks, including 220 owner-operator trucks; and 4,943 trailers comprising 36 leased trailers. P.A.M. Transportation Services, Inc. was founded in 1979 and is headquartered in Tontitown, Arkansas.