Artikel 13

1. To fall within the provisions of sections (a) and (b) of this Chapter, containers must be constructed in conformity with the conditions laid down in Part I of annex 7 and must have been approved according to the procedure laid down in Part II of that annex.
2. Containers approved for the transport of goods under Customs seal in accordance with the Customs Convention on Containers, 1956, the agreements arising therefrom concluded under the auspices of the United Nations, the Customs Convention on Containers, 1972 or any international instruments that may supersede or modify the latter Convention, shall be considered as complying with the provisions of paragraph 1 above and must be accepted for transport under the TIR procedure without further approval.