Artical 54

1. Any State may, at the time of signing this Convention or of depositing its instrument of ratification or accession, declare that it does not consider itself bound by Article 52 of this Convention. Other Contracting Parties shall not be bound by Article 52 with respect to any Contracting Party which has made such a declaration.

2. At the time of depositing its instrument of ratification or accession, any State may, by notification addressed to the Secretary-General, declare that for the purposes of the application of the Convention it treats mopeds as motorcycles (Article 1 (n)). By notification addressed to the Secretary-General, any State may subsequently at any time withdraw its declaration.

3. The declarations provided for in paragraph 2 of this Article shall become effective six months after the date of receipt by the Secretary-General of notification of them or on the date on which the Convention enters into force for the State making the declaration, whichever is the later.

4. Any modification of a previously selected distinguishing sign notified in conformity with Article 45, paragraph 4, or Article 46, paragraph 3 of this Convention, shall take effect three months after the date on which the Secretary-General receives notification thereof.

5. Reservations to this Convention and its annexes, other than the reservation provided for in paragraph 1 of this Article, shall be permitted on condition that they are formulated in writing and, if formulated before the deposit of the instrument of ratification or accession, are confirmed in that instrument. The Secretary-General shall communicate such reservations to all States referred to in Article 45, paragraph 1, of this Convention.

6. Any Contracting Party which has formulated a reservation or made a declaration under paragraphs 1 or 4 of this Article may withdraw it at any time by notification addressed to the Secretary-General.

7. A reservation made in accordance with paragraph 5 of this Article:
   (a) Modifies for the Contracting Party which made the reservation the provisions of the Convention to which the reservation relates, to the extent of the reservation;
   (b) Modifies those provisions to the same extent for the other Contracting Parties in their relations with the Contracting Party which entered the reservation.