19. That length of the M73 being part of the slip road from the northbound carriageway of the M73 to the Baillieston Interchange Roundabout, from a point 26 metres or thereby south of where the extended centreline of the slip road intersects with the centreline of the circulatory carriageway of the Baillieston Interchange Roundabout to the point of that intersection, a distance of 26 metres or thereby.