1. Any Member State, desirous of withdrawing from the present Convention, shall give one year notice to the Executive Secretary who shall inform all Member States. If, on expiration of this time limit, notification has not been withdrawn, the Member State concerned shall cease to be party to the present Convention. 2. In the course of the one year period indicated in sub-paragraph 1 above, this Member State shall continue to comply with the provisions of the present Convention and remain bound to fulfil their obligations arising from the provisions of this Convention. Article 38 Movement of goods under the Inter-States Road Transit Regime shall be subject to the different national regulations of the Member States provided that they are not contrary to the provisions of the present Convention. Article 39 Each Member State shall, in agreement with their immediate neighbouring Member State establish a list of the itineraries and Customs Offices along the itineraries open to Inter-States Road Transport of goods. Article 40 1. The present Convention shall enter into force provisionally upon signature by Heads of State and Government of Member States and definitely upon ratification by at least seven signatory States in accordance with the constitutional procedure applicable for each signatory State. 2. This Convention and instruments of ratification shall be deposited with the Executive Secretariat of ECOWAS which shall transmit certified true copies of this Convention to all Member States and notify them of the dates of deposit of the instruments of ratification and shall register this Convention with the Organisation of African Unity, the United Nations and such Organisations as the Council shall determine. 3. Each Member State shall inform the Executive Secretariat of the arrangement for the enforcement of the present Convention. The Executive Secretariat shall communicate this information to the other Member States of such arrangements. ANNEX "B" TECHNICAL SPECIFICATION APPLICABLE TO ROAD VEHICLES INVOLVED IN ECOWAS INTERSTATES TRANSPORTATION OF MERCHANDISE UNDER TRANSIT STATUS For purposes of implementing Article 4 (a) of the Convention, Member States have agreed as follows : 1. ROAD VEHICLES Vehicles allowed under the scheme of international road transportation of merchandise under customs seal shall be constructed and fitted out in such a way that : a. Customs seals may be affixed easily and effectively ; b. No merchandise may be extracted or introduced without leaving traces behind or breaking the seal ; c. There are no hidden compartments where goods might be concealed. Vehicles shall be assembled or modified in such a manner that any compartments, chambers or other areas which can be loaded with merchandise are easily accessible for customs inspection.