Road and traffic signs
What does this sign warn you about?
- A dual carriageway begins
- The road narrows on both sides aheadCorrect
- Two lanes merge into a roundabout
- Roadworks with a contraflow
Why?
The black lines on this triangular sign show the road narrowing in from both sides ahead. The road will get narrower, so be ready to give way or wait, especially if a large vehicle is coming the other way. Warning signs like this are always triangular with a red border.
Highway Code rule Traffic signs