Consult your supervisor, manager or other competent person about what to do. The layouts contained in this Code are basic examples and further guidance is available in Chapter 8 of the Traffic Signs Manual.
Warning: Only persons who are competent with signing, lighting and guarding on dual carriageways are to be used for the planning and setting up works.
Right lane closure
Left lane closure
If the left lane is closed, you should normally merge traffic into the left lane using a guide island, then return the traffic to the right lane(s). For certain short-term works, it may be an acceptable alternative to merge traffic to the right. See Chapter 8 of the Traffic Signs Manual for further guidance. If you think that mobile lane closure methods may be required for setting out guarding, you must consult your supervisor, manager or other competent person.
Signing requirements for dual carriageways
|Speed limit||Signing requirements|
|30 mph||As shown in both figures above, except that distance plates may be omitted|
|40 mph||As shown in both figures above|