Road narrows on right ahead
A red triangle showing a narrowing on the right only. Stay positioned slightly to the left of your lane and watch for oncoming traffic that may need to wait for you.
- Shape
- Triangular
- Background
- White
- Border
- Red
- Primary symbol
- Other
- Diagram reference
- 517.0
Where you'll see this sign
Where lane reductions occur for central-reservation works, near pedestrian refuges, and at the entrances to one-way systems.
Test yourself on UK road signs
How well do you really know your road signs? New Driver Hub's free mock theory test pulls from official-style DVSA questions and tells you which signs you keep getting wrong.
