Article 2
1. With effect from 1 May 1991 no Member State may, on grounds relating to field of vision: - refuse, in respect of a type of vehicle, to grant EEC type-approval, or to issue the copy of the certificate provided for in the last indent of Article 10 (1) of Directive 70/156/EEC (3), or to grant national type- approval, or - prohibit the entry into service of vehicles where the field of vision of drivers of such type of vehicle or of such vehicles has been determined in accordance with Directive 77/649/EEC, as amended by this Directive. 2. With effect from 1 October 1991 Member States: - shall no longer issue the copy of the certificate provided for in the last indent of Article 10 (1) of Directive 70/156/EEC in respect of a type of vehicle of which the driver's field of vision has not been determined in accordance with Directive 77/649/EEC, as amended by this Directive, - may refuse to grant national type-approval of a type of vehicle of which the driver's field of vision has not been determined in accordance with Directive 77/649/EEC, as amended by this Directive.