Unladen Inland Waterway Traffic
Unladen Inland Waterway Traffic : Inland Waterway Transport - Traffic. Any movement of an IWT freight vessel for which the gross-gross weight of goods carried, including that of equipment such as containers, swap-bodies and pallets, is nil; as well as any movement of an IWT passenger vessel without passengers. The movement of an IWT vessel carrying empty equipment such as containers, swap-bodies and pallets is not considered to be an unladen journey