Green signs in the United Kingdom: what they are and why they appear on roads

Green signs in the United Kingdom appear along some roads but have no official value in the highway code

Green signs in the United Kingdom are attracting the attention of motorists and the media: these are mysterious green, circular signs, similar to traditional prohibition or obligation signs, but without any formal recognition in British traffic regulations. In the centre, they show a speed — often 20 miles per hour — reminiscent of official limits, although the latter are characterised by a red border and regulatory validation.

Where green signs appear in the UK

Green signs in the UK appear in various locations, displayed along urban roads or on private property. They are found in residential areas, near schools, hospitals or construction sites, contexts in which speed moderation is particularly recommended. The choice of green colour and circular shape helps to capture the attention of motorists, even though they have no prescriptive value.

The meaning of green signs in the United Kingdom

At present, green signs in the United Kingdom are not recognised by the Highway Code and do not impose any penalties. Those who exceed the indicated speed, provided they comply with the official limits, do not risk fines or penalties. Their purpose is purely indicative: an invitation to motorists to reduce their speed in sensitive areas where pedestrians or children are more likely to be present.

Why green signs are used

Local authorities can install these signs to reinforce the perception of risk without introducing new formal limits. Green signs in the UK thus aim to improve road safety through a simple and immediate visual message that encourages caution without legally restricting driving.

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