Two-way traffic
A red triangle with two opposite-direction arrows warns that traffic ahead flows in both directions on the same carriageway. Used when a one-way street ends, when a dual carriageway becomes single, or after roadworks revert to normal flow. Don't overtake without a clear, long view of the road ahead.
- Shape
- Triangular
- Background
- White
- Border
- Red
- Primary symbol
- Arrow
- Secondary symbol
- Arrow
- Diagram reference
- 521.0
Where you'll see this sign
Where one-way systems end, after roadworks contraflows, and on transitions from dual carriageway back to single carriageway.
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.
