Decision No. 1431/1999/QD-BGTVT on the installation and management of inland waterways navigation signal devices in ship clearances of river bridges. Country/Territory Viet Nam Document type Regulation Date 1999 Source FAO, FAOLEX Subject Water Keyword Inland waters Navigation Bed Institution Geographical area Asia, South-Eastern Asia Abstract This Decision provides for installation of navigation indication devices in inland waterways of Vietnam and defines the functions of the Inland Waterways Managing Unit relative to the maintenance of riverbeds, signal devices, bridges, etc. Full text English