Warning signs
Road narrows on right ahead
What it means
The road loses width on the right just ahead, so the space on your offside is about to disappear. It is common where a central island, bridge or hatched area begins. Ease off, ease your position slightly to the left in good time, and do not begin an overtake, because the gap you would need is closing.
Highway Code Rule 167 — read it on GOV.UK
More on signs like this: Warning road signs explained: junctions, bends, narrowing roads and hazards
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Sign images: Department for Transport, © Crown copyright. Used under the Open Government Licence v3.0.