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1. Annexes III and IV to this Agreement may be amended in accordance with the procedure specified in this article.
2. At the request of a Contracting Party, any amendment proposed by it to this Agreement shall be considered by the Working Party on Intermodal Transport and Logistics of the United Nations Economic Commission for Europe.
3. If the amendment is adopted by a two-thirds majority of the Contracting Parties present and voting, the amendment shall be communicated by the Secretary-General of the United Nations to all Contracting Parties for acceptance.
4. Any proposed amendment communicated in accordance with paragraph 3 of this article shall be deemed accepted unless, within a period of six months following the date of its communication, one fifth or more of the Contracting Parties have notified the Secretary-General of the United Nations of their objection to the proposed amendment.
5. Any amendment accepted in accordance with paragraph 4 of this article shall be communicated by the Secretary-General to all Contracting Parties and shall enter into force three months after the date of its communication with respect to all Contracting Parties except those which, prior to the date of its entry into force, have notified the Secretary-General that they did not accept the proposed amendment.
6. If one fifth or more of the Contracting Parties have notified an objection to the proposed amendment in accordance with paragraph 4 above, the amendment shall be deemed not to hâve been accepted and shall have no effect whatsoever.