the obligations which will devolve upon it during the transitional and final stages.The detailed rules for this preparatory stage, in particular those for aid from the Community, are set out in the Provisional Protocol and in the Financial Protocol to this Agreement.2. The preparatory stage shall last five years, unless it should be extended in accordance with the conditions laid down in the Provisional Protocol.The change-over to the transitional stage shall be effected in accordance with Article 1 of the Provisional Protocol.Article 41. During the transitional stage the Contracting Parties shall, on the basis of mutual and balanced obligations:- establish progressively a customs union between Turkey and the Community;- align the economic policies of Turkey and the Community more closely in order to ensure the proper functioning of the Association and the progress of the joint measures which this requires.2. This stage shall last not more than twelve years, subject to such exceptions as may be made by mutual agreement. The exceptions must not impede the final establishment of the customs union within a reasonable period.Article 5The final stage shall be based on the customs union and shall entail closer coordination of the economic policies of the Contracting Parties.Article 6To ensure the implementation and the progressive development of the Association, the Contracting Parties shall meet in a Council of Association which shall act within the powers conferred upon it by this Agreement.Article 7The Contracting Parties shall take all appropriate measures, whether general or particular, to ensure the fulfilment of the obligations arising from this Agreement.They shall refrain from any measures liable to jeopardize the attainment of the objectives of this Agreement.TITLE IIIMPLEMENTATION OF THE TRANSITIONAL STAGEArticle 8In order to attain the objectives set out in Article 4, the Council of Association shall, before the beginning of the transitional stage and in accordance with the procedure laid down in Article 1 of the Provisional Protocol, determine the conditions, rules and timetables for the implementation of the provisions relating to the fields covered by the Treaty establishing the Community which must be considered; this shall apply in particular to such of those fields as are mentioned under this Title and to any protective clause which may prove appropriate.Article 9The Contracting Parties recognize that within the scope of this Agreement and without prejudice to any special provisions which may be laid down pursuant to Article 8, any discrimination on grounds of nationality shall be prohibited in accordance with the principle laid down in Article 7 of the Treaty establishing the Community.Chapter IThe customs unionArticle 101. The customs union provided for in Article 2 (2) of this Agreement shall cover all trade in goods.2. The customs union shall involve:- the prohibition between Member States of the Community and Turkey, of customs duties on imports and exports and of all charges having equivalent effect, quantitative restrictions and all other measures having equivalent effect which are designed to protect national production in a manner contrary to the objectives of this Agreement;- the adoption by Turkey of the Common Customs Tariff of the Community in its trade with third countries, and an approximation to the other Community rules on external trade.Chapter 2AgricultureArticle 111. The Association shall likewise extend to agriculture and trade in agricultural products, in accordance with special rules which shall take into account the common agricultural policy of the Community.2. 'Agricultural products' means the products listed in Annex II to the Treaty establishing the Community, as at present supplemented in accordance with Article 38 (3) of that Treaty.Chapter 3Other economic provisionsArticle 12The Contracting Parties agree to be guided by Articles 48, 49 and 50 of the Treaty establishing the Community for the purpose of progressively securing freedom of movement for workers between them.Article 13The Contracting Parties agree to be guided by Articles 52 to 56 and Article 58 of the Treaty establishing the Community for the purpose of abolishing restrictions on freedom of establishment between them.Article 14The Contracting Parties agree to be guided by Articles 55, 56 and 58 to 65 of the Treaty establishing the Community for the purpose of abolishing restrictions on freedom to provide services between them.Article 15The rules and conditions for extension to Turkey of the transport provisions contained in the Treaty establishing the Community, and measures adopted in implementation of those provisions shall be laid down with due regard to the geographical situation of Turkey.Article 16The Contracting Parties recognize that the principles laid down in the provisions on competition, taxation and the approximation of laws contained in Title I of Part III of the Treaty establishing the Community must be made applicable in their relations within the Association.Article 17Each State party to this Agreement shall pursue the economic policy needed to ensure the equilibrium of its overall balance of payments and to maintain confidence in its currency, while taking care to ensure a continuous, balanced growth of its economy in conjunction with stable prices.Each State party to this Agreement shall pursue a conjunctural policy, in particular a financial and monetary policy, which furthers these objectives.Article 18Each State party to this Agreement shall pursue a policy with regard to rates of exchange which ensures that the objectives of the Association can be attained.Article 19The Member States of the Community and Turkey