1. This Directive applies to:
(a) the dimensions of motor vehicles in categories M2, M3 and N2 and N3 and their trailers in categories 03 and 04, as defined in Annex II to Council Directive 70/156/EEC of 6 February 1970 on the approximation of the laws of the Member States relating to the type approval of motor vehicles and their trailers (7);
(b) the weights and certain other characteristics of the vehicles defined in (a) and specified in Annex I (2) to this Directive.
2. All the values of weights indicated in Annex I are valid as circulation standards and thus refer to loading conditions, not production standards, which will be defined in a later Directive.