Overview
- The green-bordered signs display recommended speeds, typically 20, 30 or 40 mph, and are not recognized by the UK Highway Code.
- Drivers face penalties only for exceeding official red-bordered speed limits, not for surpassing the green advisory numbers.
- Local councils are deploying the signs to encourage slower driving near schools, hospitals, residential streets and construction sites.
- The design mirrors circular regulatory signs to draw attention while remaining distinct from enforceable limits.
- Similar advisory schemes appear locally in parts of France and Spain, while Italy has not adopted green signage and relies on blue advisory signs for recommendations.