For the purpose of this Directive, 'motor vehicle' means any power-driven vehicle falling within one of the categories listed below, intended for use on the road and having at least four wheels and a maximum design speed exceeding 25 km/h:
- category M3 vehicles having a maximum weight exceeding 10 metric tonnes,
- category N3 vehicles,
categories M3 and N3 being understood to be those defined in Annex I to Directive 70/156/EEC (4).