Dual Carriageway Ends Sign – Diagram 520 | Permanent UK Traffic Sign

Dual Carriageway Ends Sign – Diagram 520 | Permanent UK Traffic Sign

It is an official UK warning sign that alerts drivers to the end of a dual carriageway, indicating that traffic will merge into a single carriageway ahead. This sign is essential for road safety and traffic management, ensuring that motorists reduce speed, prepare for lane merging, and drive cautiously. It is fully TSRGD-compliant and is commonly found on motorways, highways, and rural roads transitioning from dual to single carriageways.

Where is the Dual Carriageway Ends Sign Used?

This sign is installed in locations where drivers must prepare for reduced lanes and potential traffic merging:

• End of motorways or high-speed dual carriageways transitioning into single carriageways
• Rural roads where dual-lane roads merge into a single lane
• Areas where overtaking lanes end, requiring vehicles to merge
• Routes leading to single-track bridges or restricted roadways
• Construction zones where dual lanes temporarily merge into one

By warning drivers of the upcoming road change, this sign helps prevent sudden braking, last-minute lane changes, and potential collisions.

Ensuring Safe Traffic Merging

The Dual Carriageway Ends Sign (Diagram 520) plays a critical role in:

Alerting drivers to the lane reduction and need to merge safely
Encouraging reduced speed and increased awareness of oncoming traffic
Preventing last-minute lane changes and dangerous overtaking attempts
Ensuring compliance with UK road safety laws on merging lanes

With its clear triangular warning design featuring a narrowing dual road symbol, this sign provides instant recognition for approaching motorists.

Highly Visible, Durable & Weather-Resistant

This official UK warning sign is designed for long-term outdoor use, ensuring maximum visibility and durability in all conditions.

Retroreflective surface for high visibility in day and night conditions
Weatherproof and corrosion-resistant materials for long-lasting performance
TSRGD-compliant – fully meets UK road safety regulations

Easy Installation & Multiple Size Options

The Dual Carriageway Ends Sign – Diagram 520 is available in various standard UK road sign sizes and materials to fit different locations.

Pre-drilled holes for quick and secure installation
Multiple size options for highways, rural roads, and merging areas
Compatible with post-mounting systems for easy setup

Why Choose This Sign?

Official UK warning sign for the end of dual carriageways
Highly visible & reflective for maximum safety compliance
Weatherproof & durable for long-term outdoor use
Prevents confusion & enhances driver awareness
Fully compliant with UK TSRGD traffic regulations

Summary

• Dual Carriageway Ends Sign – Diagram 520 warns that the road ahead narrows from a dual to a single carriageway.
• Encourages drivers to slow down and merge safely when lanes reduce.
• Highly visible, durable & weatherproof for long-term outdoor use.
• Ideal for highways, rural roads, and road transition areas.
• Fully compliant with TSRGD UK traffic sign regulations.

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Additional resources:

Driving rules

• The Highway Code
• Legal obligations of drivers and riders