What should you do?
Check mirrors and keep to your lane as the paths rejoin, watching for vehicles drifting across.
How to recognise it
Orange diamond with two upward arrows curving together above an island shape at the bottom.
Common confusion
Its island is at the bottom; the start-of-obstruction sign has the island at the top.
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.
