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Side Winds Likely Ahead Warning Sign – Diagram 581. Used on roads exposed to strong lateral winds. Available in reflective grades and all standard UK sizes.
Professional design, supply, and installation of all types of traffic signs across the UK.
Learn More 🚀The Side Winds Likely Ahead Warning Sign – Diagram 581 is a critical UK road warning sign designed to alert motorists of areas where sudden or strong crosswinds may affect vehicle control. These conditions are especially hazardous for high-sided vehicles, caravans, motorbikes, and cyclists, making early warning essential for road safety.
Manufactured in strict compliance with TSRGD Diagram 581, BS EN 12899-1, and Chapter 4 of the Traffic Signs Manual, this sign is made from high-quality materials including aluminium, composite substrate, or durable self-adhesive vinyl. It is completed with RA2 or R3B reflective sheeting, ensuring optimal visibility during day, night, or adverse weather.
Available in all UK standard triangular sizes — 450mm, 600mm, 750mm, 900mm, 1200mm, and 1500mm — and can be supplied with channel rails, plate-only options, or self-adhesive backing for easy and secure installation on all road types.
Diagram 581 features a clear, easily recognisable symbol: a wind-sock blowing sideways inside a red-bordered triangle, signalling areas susceptible to strong or gusty lateral winds. It is commonly deployed on bridges, open motorways, coastal routes, and elevated roads exposed to changing wind conditions.
✔️ Fully TSRGD Diagram 581 and Chapter 8 compliant
✔️ RA2 or R3B reflective options for maximum visibility
✔️ Constructed from aluminium, composite, or sticker substrate
✔️ Six standard sizes to meet any UK road requirement
✔️ Installation-ready with multiple mounting options
✔️ Fast delivery direct from UK manufacturer
• Bridges and viaducts exposed to crosswinds
• Coastal and upland road networks
• Wind-prone motorway sections
• Open rural routes and moorland highways
• Airport service roads or high-altitude logistics areas
• ✅ Official UK road sign for dangerous side winds
• ✅ Complies with TSRGD Diagram 581
• ✅ Durable and reflective — built for British conditions
• ✅ Available in 450mm–1500mm standard triangle sizes
• ✅ Trusted UK manufacturer with rapid dispatch
| Feature | Details |
|---|---|
| Product Name | Side Winds Likely Ahead Warning Sign |
| Diagram Number | 581 |
| Reflective Class (Facing) | RA2, R3B |
| Mounting Options | Channel, Plate-only, Self-Adhesive |
| Material (Substrate) | Aluminium, Composite, Stickers |
| Available Sizes (mm) | 450, 600, 750, 900, 1200, 1500 |
| Compliance | TSRGD Diagram 581, BS EN 12899-1, Chapter 8 |
| Section | Link & Description |
|---|---|
| 🛒 Shop Permanent Signs | Explore all Chapter 8 compliant road signs – reflective and compliant |
| 📏 Standard Triangle Sign Sizes | Choose from 450mm, 600mm, 750mm, 900mm, 1200mm & 1500mm – fast delivery |
| 🚧 Permanent Installation Options | Mounting posts, fixings, and installation services across the UK |
| 📞 Get a Road Sign Quote | Request pricing for bulk orders or custom specifications |
| 📚 Government Guidance | Safety at Street Works – Official Code of Practice (PDF) The Highway Code – UK traffic signage rules and standards |
| Weight | N/A |
|---|---|
| Facing | RA1, RA2, R3B |
| Substrate | Aluminium, Composite, Stickers |
| Fixing | Channel, Plate Only, Self-Adhesive |
| Size (mm) | 300, 600, 750, 900 |
| Facing Type | Warranty Duration |
|---|---|
| RA1 | 7 years |
| R2/RA2 | 10 years |
| R3B/R3C | 12 years |
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