Page:UK Traffic Signs Manual - Chapter 8 - Part 1 (Traffic Safety Measures and Signs for Road). Designs 2009.pdf/78

 'Plan TS3: Transition section (single to dual), works starting between 600 m and 850 m downstream of the start of the dual carriageway, approach signing on the single carriageway road

* Where sight lines are particularly poor, such as on a left-hand bend, a duplicate set of signs should be placed on the other side of the single carriageway.

If the location of the works allow, then a 600 yard wicket sign should be included on the dual carriageway section.

NOTE: Cone spacing depends on the type of road – see Table |A1.3 (Appendix 1). 77