Page:UK Traffic Signs Manual - Chapter 4 - Warning Signs. 2013.pdf/22

 NOTES 21
 * 1) On two-lane carriageways subject to a 30 mph speed limit, a single sign mounted on the side of the road on which the lane is to be lost may be adequate, although the possibility of obscuration by parked vehicles should be considered.
 * 2) Also all-purpose dual three-lane carriageway roads subject to a 70 mph speed limit.
 * 3) Bracketed dimension is used where there are four or more lanes.
 * 4) A third pair of signs should be provided at a distance of 180 m indicating a distance of 200 yds.