What should you do?
Move into the single lane in good time and remember that oncoming traffic will now be on the other side of the road with no barrier between you.
How to recognise it
Yellow diamond with a black shape of two lanes narrowing into one, like a fork turned upside down.
Common confusion
It is not a lane-merge warning on a road that stays dual; after this sign overtaking means using the opposing lane.
Explanation written by the My Driving Test editorial team using the Department of Transport Traffic Signs Manual conventions and the RSA Rules of the Road.
