Paragraph 6

A motor vehicle being used for the conveyance of goods to or from premises situated on or adjacent to the length of road, being goods which by reason of their size or weight could not reasonably be conveyed to or from such premises otherwise than by means of a motor vehicle and provided always that the motor vehicle shall not be permitted to use the road for any longer period than may be necessary for the conveyance, loading or unloading of those goods.