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DESIGN CRITERIA
'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
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*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).
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