What do triangular road signs mean in the UK?

Triangular road signs in Great Britain are normally warning signs. They tell you that a hazard or change in the road is ahead; they do not, by themselves, set a speed or give permission to continue without checking. The sign is an early prompt to look further ahead, choose a safe speed and be ready to respond.

This guide explains the pattern behind the signs, without trying to reproduce the whole Highway Code. Always follow the sign and road markings you see on the road.

What information is shown in a triangular road sign?

The symbol gives the kind of hazard. It might show a junction, a bend, traffic lights, pedestrians, animals, road works, a queue or a change in the road surface. A supplementary plate can add distance, length or another detail. Read the symbol and the plate together; the plate can change when or where the warning matters.

The Department for Transport describes triangles as warnings, while circles give orders and rectangles provide information. The red border is a useful visual cue, but the picture still needs to be interpreted in its road context.

What should a learner do after seeing one?

1. Check mirrors and ease off early if the view, surface or traffic requires it.
2. Look for the hazard itself, not just the sign. A bend, crossing or queue may be closer than it first appears.
3. Keep a safe following distance and leave room to stop if the hazard develops.
4. Use the road markings, signals and any temporary signs to make the final decision.

A warning sign is not a target speed. Rain, darkness, parked vehicles and visibility can make a lower speed the correct choice.

Examples learners often meet

A junction-on-bend sign asks you to scan through the bend before committing. A children-crossing or pedestrian warning sign means you should look for people who may be hidden by vehicles. A road-works sign can be followed by cones, a temporary lane or a changed speed limit, so keep reading the signs instead of relying on a familiar route.

Practise the skill

In our traffic-sign practice, name the hazard before you name the sign. Then use theory practice to check the rule and try the decision again on a different example. A driving lesson should help you spot the developing hazard in time, not memorise a single picture.

Official reference: The Highway Code: traffic signs and the Department for Transport's signing system. Reviewed 4 October 2026.