Arkansas Best puts its best efforts on the road to provide freight transportation services in its home state and the rest of North America. Specializing in long-haul, less-than-truckload (LTL) shipments of general commodities (no hazardous waste or dangerous explosives), subsidiary ABF Freight System accounts for over 90% of the company's sales. (LTL carriers combine freight from multiple shippers into a single truckload.) ABF Freight System operates a fleet of about 2,500 tractors and 17,000 trailers from about 280 terminals in the US, Canada, and Puerto Rico; it offers service into Mexico via alliances. Freight carried by the company includes chemicals, food, textiles, apparel, appliances, and furniture.