11.6.1999 Official Journal of the European Communities L 146/31 COMMISSION DIRECTIVE 1999/56/EC of 3 June 1999 adapting to technical progress Council Directive 78/933/EEC relating to the installation of lighting and light-signalling devices on wheeled agricultural and forestry tractors (Text with EEA relevance) THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Community, Having regard to Council Directive 74/150/EEC of 4 March 1974 on the approximation of the laws of the Member States relating to the type-approval of wheeled agricultural or forestry tractors ('), as last amended by Directive 97/54/EC of the European Parliament and of the Council (%, and in particular Article 11 thereof, Having regard to Council Directive 78/933/EEC of 17 October 1978 on the approximation of the laws of the Member States relating to the installation of lighting and light-signalling devices on wheeled agricultural and forestry tractors (}), as last amended by Directive 97/ 54/EC, and in particular Article 5 thereof, (1)  Whereas, in order to improve safety, it is now necessary to specify how the light-signalling devices should be installed; (2) Whereas the measures provided for in this Direc- tive are in accordance with the opinion of the Committee for Adaptation to Technical Progress established by Article 12 of Directive 74/150/EEC, HAS ADOPTED THIS DIRECTIVE: Article 1 The Annexes to Directive 78/933/EEC are hereby amended as set out in the Annex to this Directive. Article 2 1.  From 1 July 2000, Member States may not: — refuse to grant EC type-approval, to issue the docu- ment provided for in the third ident of Article 10(1) of Directive 74/150/EEC, or to grant national type- approval, in respect of a type of tractor, or — prohibit the entry into service of tractors, if the tractors in question meet the requirements of Directive 78/933/EEC, as amended by this Directive. () OJ L 84, 28.3.1974, p. 10. @) OJ L 277, 10.10.1997, p. 24. () OJ L 325, 20.11.1978, p. 16. 2. From 1 January 2001, Member States: — may no longer issue the document provided for in the third indent of Article 10(1) of Directive 74/150/EEC in respect of a type of tractor which does not meet the requirements of Directive 78/933/EEC, as amended by this Directive, — may refuse to grant national type-approval in respect of a type of tractor which does not meet the require- ments of Directive 78/933/EEC, as amended by this Directive. Article 3 1. Member States shall bring into force the laws, regu- lations and administrative provisions necessary to comply with this Directive by 30 June 2000 at the latest. They shall forthwith inform the Commission thereof. When Member States adopt those provisions, they shall contain a reference to this Directive or be accompanied by such a reference on the occasion of their official publi- cation. Member States shall determine how such reference is to be made. 2. Member States shall communicate to the Commis- sion the text of the main provisions of domestic law that they adopt in the field governed by this Directive. Article 4 This Directive shall enter into force on the 20th day following its publication in the Official Journal of the European Communities. Article 5 This Directive is addressed to the Member States. Done at Brussels, 3 June 1999. For the Commission Martin BANGEMANN Member of the Commission