Motor Vehicles (Authorisation of Special Types) Order (Northern Ireland) 1997

1.  If the overall width of the vehicle, or in the case of a combination of vehicles mentioned in Article 12(1), the overall width of the combination exceeds the width specified in an item in column 2 of the Table, the vehicle, or in the case of a combination of vehicles, the drawing vehicle, shall not be drawn at a speed exceeding that specified in column 3:

TABLE

(1)(2)(3)
ItemOverall WidthMaximum Speed
13.5 metres12 miles per hour
22.55 metres20 miles per hour