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Triangular

Sign Title Category Shape Colour (Background) Colour (Foreground)
Low flying aircraft or sudden aircraft noise likely ahead Warning signs Triangular White Red
Low flying helicopters or sudden helicopter noise likely ahead Warning signs Triangular White Red
Maximum headroom of 14′-6” at hazard ahead Low bridge signs Triangular White Red
Maximum headroom of 3.8m at arch bridge ahead Low bridge signs Triangular White Red
Maximum headroom of 4.4m at hazard ahead Low bridge signs Triangular White Red
Road narrows on both sides ahead Traffic calming, Warning signs Triangular White Red
Road narrows on left ahead Traffic calming, Warning signs Triangular White Red
Road narrows on right ahead Traffic calming, Warning signs Triangular White Red
No smoking warning Warning signs Triangular White Red
Electrified overhead cable ahead Level crossing signs Triangular White Red
Pedestrians in road ahead Warning signs Triangular White Red
Quayside or river bank ahead Warning signs Triangular White Red
Traffic queues likely on road ahead Warning signs Triangular White Red
Junction on right bend ahead Warning signs Triangular White Red
Risk of grounding at a railway or tramway level crossing or hump backed bridge Level crossing signs Triangular White Red