What should you do?
Continue in the lane at a safe speed, watching the next signals in case the lane status changes.
How to recognise it
A black square panel with four amber lamps at the corners and a green arrow pointing downward.
Common confusion
A green downward arrow is not an instruction to speed up; it only confirms the lane is open.
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.
