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1. Appendices 1 and 2 to the annex to this Agreement may be amended by the procedure specified in this article.
2. At the request of a Contracting Party, any amendments proposed to appendices 1 and 2 to the annex to this Agreement shall be considered by the Principal Working Party on Road Transport of the Economic Commission for Europe.
3. If it is adopted by the majority of the members present and voting, and if this majority includes the majority of the Contracting Parties present and voting, the amendment shall be communicated by the Secretary-General to the competent administrations of all the Contracting Parties for acceptance.
4. The amendment shall be accepted if, within a period of six months following the date of notification, less than one-third of the competent administrations of the Contracting Parties notify the Secretary-General of their objection to the amendment.
4 bis. In the case of a country which becomes a Party to this Agreement between the moment of notification of a draft amendment and the moment when it is considered accepted, the secretariat of the Working Party on Road Transport of the Economic Commission for Europe shall notify the new State Party of the draft amendment as soon as possible. The latter may inform the Secretary-General of any objection before the end of the six-month period from the date of transmission of the original amendment to all Contracting Parties.
5. Any amendment accepted shall be communicated by the Secretary-General to all the Contracting Parties and shall come into force three months after the date of its notification.