What should you do?
Slow down and check for oncoming vehicles, especially large ones; be ready to give way if there is not room for both to pass.
How to recognise it
Yellow diamond with two black vertical lines that curve inwards towards each other at the top.
Common confusion
Compare with the road narrows from left or right signs, where only one edge moves inwards.
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.
