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1. This exemption shall be granted in the territory of each Contracting Party so long as the conditions laid down in the Customs regulations in force in that territory for the temporary admission without payment of import duties and import taxes of the vehicles referred to in article 2, and the conditions laid down in the regulations in force for the authorization of the transport concerned are fulfilled.
2. Nevertheless, each Contracting Party may exclude from the benefit of this exemption any vehicle which it may authorize to engage in transport when the points of departure and of destination are both situated within its territory.