Directive 97/54/EC of the European Parliament and of the Council of 23 September 1997 amending, as regards the maximum design speed of wheeled agricultural or forestry tractors, Council Directives 74/150/EEC, 74/151/EEC, 74/152/EEC, 74/346/EEC, 74/347/EEC, 75/321/EEC, 75/322/EEC, 76/432/EEC, 76/763/EEC, 77/311/EEC, 77/537/EEC, 78/764/EEC, 78/933/EEC, 79/532/EEC, 79/533/EEC, 80/720/EEC, 86/297/EEC, 86/415/EEC and 89/173/EEC