In the United States of America, shipments larger than about 15,000 pounds are typically classified as “truckload” (TL), given that it is more efficient and economical for a large shipment to have exclusive use of one larger trailer rather than share space on a smaller LTL trailer. The total weight of a loaded truck (tractor and trailer, 5-axle rig) cannot exceed 80,000 pounds in the U.S. In ordinary circumstances, long-haul equipment will weigh about 35,000 pounds; leaving about 45,000 pounds of freight capacity. Similarly a load is limited to the space available in the trailer; normally 48 or 53 feet long and about 100 inches wide and 106 inches high. While express, parcel, and LTL shipments are always intermingled with other shipments on a single piece of equipment and are typically reloaded across multiple pieces of equipment during their transport, TL shipments usually travel as the only shipment on a trailer and TL shipments usually deliver on exactly the same trailer as they are