One of the largest less-than-truckload (LTL) carriers of general commodities in the US, FedEx National LTL (formerly Watkins Motor Lines) goes coast to coast. (LTL carriers combine freight from multiple shippers into a single truckload.) FedEx National LTL's specialty resides in serving the long-haul LTL freight market sector, which involves delivery windows of three days and more. Owned by express giant FedEx, the company is a unit within its FedEx Freight segment, which operates from a network of about 480 terminals in the US and Canada. Overall, FedEx Freight maintains a fleet of about 59,000 vehicles and trailers.