Warning signs
Traffic merges ahead onto main carriageway from the left
What it means
This one is aimed at you as the joining driver: the road you are on is about to merge onto a main carriageway and you may have to give way to traffic already on it. Build your speed up to match theirs, check the mirror and blind spot, and aim for a gap rather than stopping at the merge point.
Test yourself on signs like this one
Free with an account. Each answer tells you what the sign means, not just whether you were right.
