ECOWAS 4. REVISED TREATY MemberStatesundertaketo be boundby theconsolidated importdutiescontained in the ECOWAS Customs Tariff for the purposes of trade liberalisation within the Community. 5. Member States undertake to avoid double taxation of Community citizens and grant assistance to one another in combating internationaltax evasion. The conditions and modalities for granting such assistance shall be as contained in a Double Taxation and Assistance Convention. ARTICLE 41 QUANTITATIVE RESTRICTIONS ON COMMUNITY GOODS 1. Except as may be provided for or permitted by this Treaty, Member States undertake to relax gradually and to remove over a maximum period of four (4) years after the launching of the trade liberalisation scheme referred to in Article 54, all the then existing quota, quantitative or like restrictions or prohibitions which apply to the import into that State of goods originating in the other Member Statesand thereafterrefrainfrom imposingany furtherrestrictionsor prohibitions. Whereby virtue of obligationsunder an existingcontract entered into by a Member State such a Member State is unable to comply with the provisions of this Article, the Member State shall duly notify Council of this fact and shall not extend or renew such contract at its expiry. 2. The Authority may at any time, on the recommendation of the Council decide that any quota, quantitative or like restrictions or prohibitions shall be relaxed more rapidly or removed earlier than agreed upon under paragraph 1 of this Article. 3. A Member State may, after having given notice to the Executive Secretary and the other Member States of its intention to do so, introduce or continue to execute restrictions or prohibitions affecting: (a) the application of security laws and regulations; (b) the control of arms, ammunition and other war equipment and military items; (c) the protection of human, animal or plant health or life, or the protection of public morality; (d) the transfer of gold, silver and precious and semi-precious stones; (e) the protection of national artistic and cultural property; 28