Slow Moving Vehicles Likely on Incline Ahead Warning Sign – Diagram 583 | Permanent UK Traffic Sign

Slow Moving Vehicles Likely on Incline Ahead Warning Sign – Diagram 583 | Permanent UK Traffic Sign

The Slow Moving Vehicles Likely on Incline Ahead Warning Sign – Diagram 583 is a key UK traffic sign used to alert drivers of a steep incline or descent where slow-moving heavy vehicles, such as lorries or HGVs, may be encountered. Commonly placed before long uphill climbs or steep downhill sections, this sign helps drivers prepare for reduced-speed traffic, overtaking restrictions, and potential hazards.

Fully compliant with TSRGD Diagram 583, BS EN 12899-1, and Chapter 4 of the Traffic Signs Manual, this permanent warning sign is available in RA2 or R3B reflective classes and manufactured from durable aluminium, composite, or self-adhesive sticker substrates for maximum durability and visibility in all weather conditions.

Available in all UK-standard triangle sizes — 450mm, 600mm, 750mm, 900mm, 1200mm, and 1500mm — and compatible with channel fixing rails, plate-only fittings, or adhesive backing to meet every installation need.

🔧 Technical Review

Diagram 583 features a red-bordered triangle containing a black silhouette of a heavy goods vehicle descending or ascending a steep slope. The design immediately communicates the potential presence of slow-moving or struggling vehicles on inclines, providing crucial information for following drivers to adjust speed and remain alert.

✅ Why Choose Morelock for Your Diagram 583 Sign?

✔️ Manufactured to TSRGD Diagram 583 and Chapter 8 specifications
✔️ RA2 or R3B reflective options for visibility day and night
✔️ Constructed from premium-grade aluminium, composite, or sticker material
✔️ Available in six UK-standard triangle sizes
✔️ Multiple mounting formats: channel rail, plate-only, or adhesive
✔️ Made in the UK and shipped with fast delivery options

📌 Ideal For:

• Steep hills and gradient zones
• Roads with frequent HGV or haulage traffic
• Motorway slip roads and climbing lanes
• Rural and mountainous roadways
• Quarry or logging routes with heavy slow vehicles

🌟 Summary (Why You Should Buy This Product)

• ✅ Official UK sign for slow vehicles on inclines
• ✅ Fully compliant with TSRGD Diagram 583
• ✅ Built to last with reflective and durable materials
• ✅ Supplied in all UK triangle sign sizes
• ✅ Manufactured and shipped from the UK

📊 Product Specifications Table

🔗 Useful Road Sign Resources