Artikel 2

1. This Protocol shall be open until 1 March 1974 for signature by States which are signatories to, or have acceded to, the Convention on Road Signs and Signals opened for signature at Vienna on 8 November 1968 and to the European Agreement supplementing that Convention and opened for signature at Geneva on 1 May 1971, and are either members of the United Nations Economic Commission for Europe or have been admitted to the Commission in a consultative capacity in conformity with paragraph 8 of the terms of reference of the Commission.
2. This Protocol shall be subject to ratification after the State concerned has ratified, or acceded to, the Convention on Road Signs and Signals opened for signature at Vienna on 8 November 1968 and the European Agreement supplementing that Convention and opened for signature at Geneva on 1 May 1971. The instruments of ratification shall be deposited with the Secretary-General of the United Nations.
3. This Protocol shall remain open for accession by any of the States referred to in paragraph 1 of this article which are Parties to the Convention on Road Signs and Signals opened for signature at Vienna on 8 November 1968 and to the European Agreement supplementing that Convention and opened for signature on 1 May 1971. The instruments of accession shall be deposited with the Secretary-General.