Article 5
Without prejudice to Article 4 (6): (a) articulated vehicles put into circulation before 1 January 1991 which do not comply with the specifications contained in points 1.6 and 4.4 of Annex I shall be deemed to comply with such specifications for the purposes of Article 3 if they do not exceed a total length of 15,50 m; (b) road trains, the motor vehicle of which was put into circulation before 31 December 1991 and which do not comply with the specifications contained in points 1.7 and 1.8 of Annex I, shall until 31 December 1998 be deemed to comply with such specifications for the purposes of Article 3 if they do not exceed a total length of 18,00 m.