Low Bridge Ahead Sign (Maximum Headroom 12′-6″) – Diagram 531.1 | Permanent UK Traffic Sign

⚠️ Low Bridge Ahead Sign (Maximum Headroom 12′-6″) – Diagram 531.1 | Permanent UK Traffic Sign

It is an official UK warning sign used to alert motorists that an arch bridge with a restricted height clearance (12′-6″) is ahead. This sign is crucial for road safety and traffic management, ensuring that HGVs, buses, and high-sided vehicles take necessary precautions to avoid collisions. It is fully TSRGD-compliant and is commonly installed on routes leading to low bridges, tunnels, and restricted-height structures where clearance is limited.

📍 Where is the Low Bridge Ahead Sign Used?

This sign is strategically placed in locations where height restrictions may impact vehicle access, helping drivers take necessary precautions or find alternative routes.

• Approaches to arch bridges with restricted headroom.
• Roads leading to railway bridges with low clearance.
• Historic and rural routes with older bridge structures.
• Industrial and city roads with height-restricted tunnels.
• Freight and delivery routes where HGVs may need to divert.

By warning drivers of the low clearance ahead, this sign helps prevent bridge strikes, traffic disruption, and costly vehicle damage.

⚠️ Ensuring Safe Navigation for High-Sided Vehicles

The Low Bridge Ahead Sign (Diagram 531.1) improves road safety by:

✅ Alerting drivers to an upcoming low-clearance arch bridge.
✅ Encouraging HGVs, buses, and tall vehicles to check their height before proceeding.
✅ Preventing collisions with bridge structures, avoiding road closures.
✅ Ensuring compliance with UK road safety laws regarding height restrictions.

With its clear triangular warning design, featuring a bridge arch symbol and height restriction, 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, providing maximum visibility and resilience in various weather conditions.

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

🛠 Easy Installation & Multiple Size Options

The Low Bridge Ahead Sign (Diagram 531.1) is available in various standard UK road sign sizes and materials, making it suitable for different environments.

✔️ Pre-drilled holes for quick and secure installation.
✔️ Multiple size options for motorways, A-roads, and city streets.
✔️ Compatible with post-mounting systems for easy setup.

✅ Why Choose This Sign?

✔️ Official UK warning sign for low bridges and height restrictions.
✔️ Highly visible & reflective for maximum safety.
✔️ Weatherproof & durable for outdoor use.
✔️ Prevents bridge strikes & improves route planning.
✔️ Fully compliant with TSRGD UK traffic regulations.

📌 Summary

• Low Bridge Ahead Sign (Diagram 531.1) alerts drivers to a bridge with restricted headroom of 12′-6″.
• Essential for HGVs, buses, and high-sided vehicles to prevent collisions.
• Highly visible, durable, and weatherproof for outdoor use.
• Ideal for roads leading to arch bridges, tunnels, and low-clearance structures.
• 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