15. That length of the M8 being part of the slip road from the Bailliston Interchange Roundabout to the eastbound carriageway of the M8, from a point where the extended centreline of that slip road intersects with the centreline of the circulatory carriageway of the Baillieston Interchange Roundabout to a point 24 metres or thereby southeast of that point of intersection, a distance of 24 metres or thereby.