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Quayside or Riverbank Ahead Warning Sign – Diagram 555. Alerts drivers to sudden water hazards ahead. Available in reflective finishes and all UK triangle sizes.
Professional design, supply, and installation of all types of traffic signs across the UK.
Learn More 🚀The Quayside or Riverbank Ahead Warning Sign – Diagram 555 is a critical UK road warning sign used to inform drivers of a sudden and dangerous drop into water — such as at harbours, docks, canal paths, or riverside roads. It is designed to prevent vehicles from inadvertently driving into bodies of water and is especially vital for night-time driving or unfamiliar routes near coastal or inland waterways.
Manufactured to exacting standards and compliant with TSRGD Diagram 555, BS EN 12899-1, and Chapter 4 of the Traffic Signs Manual, this sign is available in aluminium, composite, or self-adhesive sticker substrates, and features RA2 or R3B reflective sheeting for visibility in poor lighting and adverse weather.
Available in all UK-standard triangle sizes — 450mm, 600mm, 750mm, 900mm, 1200mm, and 1500mm — and offered with channel fixings, plate-only, or self-adhesive backing, the sign is suitable for both permanent waterfront installations and temporary warning zones.
The Diagram 555 sign features a silhouette of a vehicle plunging into water, enclosed within a red triangle. Its bold visual instantly alerts road users to a serious hazard: the end of the road with direct water access beyond.
✔️ Fully compliant with TSRGD, BS EN 12899-1, and Chapter 8 regulations
✔️ Available in RA2 or R3B reflective classes for day/night safety
✔️ Supplied in six UK-regulated triangle sizes
✔️ Durable aluminium, composite, or sticker options
✔️ Easy installation via channel, plate-only, or adhesive
✔️ Rapid UK delivery from trusted manufacturer
• Harbours, docks, and marina entrances
• Canal-side or riverside roads and cycle routes
• Quayside vehicle access points
• Ferry terminals and water-edge car parks
• Temporary signage for waterside works or diversions
• ✅ Official UK traffic sign for warning of road edges near water
• ✅ Compliant with Diagram 555 and Chapter 8 traffic safety rules
• ✅ Reflective and durable for long-term use
• ✅ All triangle sizes from 450mm to 1500mm available
• ✅ Made in the UK with fast dispatch and delivery
| Feature | Details |
|---|---|
| Product Name | Quayside or Riverbank Ahead Warning Sign |
| Diagram Number | 555 |
| 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 555, 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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