Traffic Merging from Left Sign – Diagram 508.1 | Permanent UK Traffic Sign

£7.29 – £71.86

Warning sign – alerts drivers that traffic will merge from the left ahead, ensuring caution and safe lane adjustments.

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⚠️ Traffic Merging from Left Sign – Diagram 508.1 | Permanent UK Traffic Sign

It is an official UK warning sign that alerts drivers to vehicles joining the main carriageway from a merging lane or slip road on the left. This sign is essential for preventing sudden lane changes, improving traffic flow, and enhancing road safety. It is fully compliant with TSRGD regulations and is commonly found on motorways, dual carriageways, and busy junctions where vehicles enter high-speed traffic lanes.

📍 Where is the Traffic Merging from Left Sign Used?

This sign is typically installed in locations where vehicles must merge safely onto a main road:

Motorway and dual carriageway entry slip roads
Junctions where minor roads merge with major roads
Urban roads where traffic lanes combine
Temporary road layouts and construction zones with altered traffic flow
Roundabout exits where merging occurs onto high-speed roads

By warning drivers of merging traffic, this sign helps reduce braking reactions, lane-switching confusion, and collision risks.

⚠️ Enhancing Safe Merging & Traffic Flow

The Traffic Merging from Left Sign (Diagram 508.1) plays a vital role in:

✅ Alerting drivers on the main road to expect merging vehicles
✅ Encouraging merging traffic to adjust speed and position safely
✅ Reducing the risk of side-impact and rear-end collisions
✅ Ensuring smoother traffic integration and lane discipline

With its clear triangular warning design featuring a merging lane symbol, this sign provides immediate recognition for approaching drivers.

📏 Highly Visible, Durable & Weather-Resistant

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

✔️ Retroreflective surface for clear 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 Traffic Merging from Left Sign – Diagram 508.1 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 motorways, dual carriageways, and urban roads
✔️ Compatible with post-mounting systems for easy setup

✅ Why Choose This Sign?

✔️ Official UK warning sign for merging traffic from the left
✔️ Highly visible & reflective for maximum safety compliance
✔️ Weatherproof & durable for long-term outdoor use
✔️ Prevents sudden lane changes & improves traffic efficiency
✔️ Fully compliant with UK TSRGD traffic regulations

📌 Summary

Traffic Merging from Left Sign – Diagram 508.1 warns of vehicles joining the main road from the left.
Encourages safe lane merging and improved driver awareness.
Highly visible, durable & weatherproof for long-term outdoor use.
Ideal for motorway slip roads, dual carriageways, and busy junctions.
Fully compliant with TSRGD UK traffic sign regulations.

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Additional resources:

Driving rules

The reflective materials used are weather resistant and designed for outdoor application. The range consists of three classes including RA1, R2/RA2, and R3B/R3C. The outdoor service life for each class of material is as follows: