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Alerts drivers to a narrowing road on the left ahead, ensuring reduced speed and safe lane positioning to prevent accidents.
Professional design, supply, and installation of all types of traffic signs across the UK.
Learn More 🚀The Road Narrows on Left Warning Sign (Low Speed) – Diagram 517 is an official temporary UK road sign that warns drivers about an upcoming narrowing of the road on the left side. It is essential for roadworks, lane reductions, and areas with restricted road space, ensuring that motorists adjust their speed and positioning to maintain safe traffic flow.
This high-visibility warning sign is commonly used in construction zones, rural roads, and temporary lane restrictions, helping to prevent side-swiping accidents, congestion, and unsafe lane merging.
ThisRoad Narrows on Left Warning Sign (Low Speed) – Diagram 517 plays a critical role in guiding drivers safely through reduced lane widths.
✅ Warns drivers about a narrowing road on the left ahead
✅ Encourages careful lane positioning and reduced speed
✅ Prevents congestion and side-swiping accidents
✅ Fully compliant with UK TSRGD temporary traffic sign regulations
By providing an early warning of lane reductions, this sign helps ensure smoother traffic movement and improved driver awareness.
Designed for temporary outdoor use, this UK road sign is built from high-quality materials to ensure maximum durability and visibility.
✔️ Retroreflective surface for enhanced visibility in all lighting conditions
✔️ Weatherproof and impact-resistant for long-lasting performance
✔️ Manufactured to TSRGD standards for temporary road signage
The Road Narrows on Left Warning Sign (Diagram 517) is available in various sizes and materials, making it adaptable for different temporary traffic management needs.
✔️ Lightweight yet sturdy for quick deployment
✔️ Available in multiple standard UK road sign sizes
✔️ Ideal for roadworks, lane closures, and rural road restrictions
✔️ Official UK warning sign for narrowing roads on the left
✔️ Highly visible & reflective for maximum road safety
✔️ Weatherproof & durable for temporary outdoor use
✔️ Prevents lane merging confusion and improves driver awareness
✔️ Fully compliant with UK TSRGD temporary traffic sign regulations
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| Weight | 4.9 kg |
|---|---|
| Facing | RA1 |
| Substrate | Composite, Stickers, GRP, Plastic, Zintec |
| Fixing | Cone Mounted, Quick-Fit, Riveted in Frame, Plate Only, Self-Adhesive |
| Size (mm) | 600, 750, 900 |
| Facing Type | Warranty Duration |
|---|---|
| RA1 | 7 years |
| R2/RA2 | 10 years |
| R3B/R3C | 12 years |
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