To control and regulate inland shipping traffic the use of inland waterways is needed. Signs inland voyages that are used are taken and determined based on UN ECE International provisions, which have been adapted for use in Indonesia based on a manual on inland waterway traffic signs in Indonesia in accordance with the RI Minister of Transportation Decree. NO. PM.3 / L / PHB - 77 DATE 18 MAY 1977.

A reservation is a unilateral statement made by a State at the time of signing, accept, ratify, ratify or accede to the treaty, which is the main content is to issue or to modify the legal effect of certain provisions in its enforcement against the State (KW 1969). Initially reservation (requirements) are defined differently based subjects that provide definition. As for the definition independent of the reservation that in general it is a unilateral statement put forward by a country at the time expressed consent to be bound by a treaty, which said "Refuse to accept or recognize or do not want to be tied to, or unwilling to accept the legal consequences of one or more provisions of the agreement, or to modify or customize the content or provide its own meaning on one or more provisions of the agreement in accordance with the needs of the country ", dissent is possible if there is no commonly agreed definition.