Triangles are used across the UK road sign system specifically to warn drivers of hazards or changes ahead.
Unlike circular order signs, a triangle does not command a specific action but alerts you so you can respond appropriately.
What this sign system means
A red bordered triangle with a white background contains a symbol describing the hazard, such as a bend, junction or animals in the road.
The upward pointing triangle is the standard shape, while an inverted triangle is reserved specifically for give way.
What to do when you see it
Reduce speed and increase awareness for the specific hazard shown on the sign.
- Slow down and prepare to react to the hazard described
- Look ahead for the situation the symbol represents
- Adjust position or speed as the hazard requires
- Remember a triangle is a warning, not a command to stop or turn
How this sign is tested
The theory test often shows a triangular sign and asks what hazard it warns of, testing recognition of specific symbols.
You may also be asked to distinguish a warning triangle from an inverted give way triangle.
Common mistakes
Learners sometimes confuse warning triangles with order signs and expect a specific action rather than general caution.
Mixing up the upright warning triangle with the inverted give way triangle is another common error.
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Practise road sign questionsFrequently asked questions
What is the difference between a triangle and a circle sign
Triangles warn of hazards while circles give orders that must be obeyed.
Why is the give way sign an inverted triangle
The inverted shape makes it visually distinct from standard warning triangles, giving it a unique appearance for priority information.
Do triangular signs apply immediately
They usually warn of a hazard a short distance ahead, so you should prepare in advance rather than react only when you reach it.