Low Flying Aircraft or Sudden Aircraft Noise Likely Ahead Warning Sign – Diagram 558 | Permanent UK Traffic Sign
The Low Flying Aircraft or Sudden Aircraft Noise Likely Ahead Warning Sign – Diagram 558 is an important UK traffic sign used to warn drivers of areas near airfields, military bases, or low-altitude flight paths. In these zones, the unexpected appearance of low-flying aircraft or sudden loud noise may startle drivers or cause distractions, particularly for nervous or inexperienced motorists.
Fully compliant with TSRGD Diagram 558, BS EN 12899-1, and Chapter 4 of the Traffic Signs Manual, this permanent warning sign is constructed from aluminium, composite material, or self-adhesive vinyl and finished with RA2 or R3B reflective sheeting for high visibility day and night.
It is available in all UK standard triangle sizes — 450mm, 600mm, 750mm, 900mm, 1200mm, and 1500mm — and can be supplied with channel fixings, plate-only options, or adhesive backing to suit all installation types.
Technical Review
Diagram 558 features a simple yet unmistakable symbol of a descending aircraft inside a red-bordered triangle. This visual cue effectively communicates the risk of aviation-related distractions, especially in areas close to airfields or flight training zones where sudden engine noise or jet turbulence may occur.
Why Choose Morelock for Your Diagram 558 Sign?
Made to TSRGD Diagram 558 and Chapter 8 specification
Available in RA2 and R3B reflective classes
Manufactured using aluminium, composite, or sticker substrate
All six standard triangle sizes available
Multiple mounting formats: channel rail, plate-only, or adhesive
UK-made and ready for fast nationwide dispatch
Ideal For:
• Roads near civil or military airfields
• Motorways running under low-flying zones
• Remote countryside with RAF training exercises
• Locations near commercial or private airports
• Aviation heritage centres and flight show zones
Summary (Why You Should Buy This Product)
• Official UK sign warning of low flying aircraft or noise
• Fully TSRGD Diagram 558 compliant
• Reflective, weatherproof, and built to last
• Wide range of sizes available
• Made in the UK, quick delivery, quality assured
Product Specifications Table
Feature | Details |
---|---|
Product Name | Low Flying Aircraft or Sudden Aircraft Noise Likely Ahead Warning Sign |
Diagram Number | 558 |
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 558, BS EN 12899-1, Chapter 8 |
Useful Road Sign Resources
Section | Link & Description |
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Explore all Chapter 8 compliant road signs – reflective and compliant |
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Choose from 450mm, 600mm, 750mm, 900mm, 1200mm & 1500mm – fast delivery |
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Mounting posts, fixings, and installation services across the UK |
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Request pricing for bulk orders or custom specifications |
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Safety at Street Works – Official Code of Practice (PDF) The Highway Code – UK traffic signage rules and standards |