Trusted Supplier to Councils and Contractors
£7.29 – £71.86
MAXIMUM HEADROOM OF 14′-6” AT HAZARD AHEAD
Unleash your creativity with our dedicated Custom Design Tool. Create traffic signs that meet your exact requirements.
Professional design, supply, and installation of all types of traffic signs across the UK.
Learn More 🚀Have questions about our products, services, or delivery? Find quick answers in our FAQ section.
Visit FAQ Section 📖The Diagram 530A Maximum Headroom Warning Sign is a UK road safety warning sign that alerts motorists, particularly HGV drivers, buses, and other high-sided vehicles, about an upcoming low bridge, tunnel, or overhead obstruction. This sign helps prevent dangerous collisions, damage to vehicles, and road disruptions caused by vehicles that exceed the clearance height.
Low-clearance hazards such as bridges, tunnels, and overhead gantries pose significant risks to high-sided vehicles. Without proper warning, drivers may:
✔ Fail to notice height restrictions, leading to vehicle collisions.
✔ Cause major traffic delays by getting stuck under a low structure.
✔ Damage infrastructure and create road safety hazards.
✔ Put other road users at risk due to sudden braking or maneuvering.
By installing the Diagram 530A sign well in advance, road authorities give high-sided vehicles sufficient time to reroute or take precautions, reducing accidents and ensuring smoother traffic flow.
The Maximum Headroom Warning Sign is strategically placed before low-clearance structures, including:
🏗️ Low bridges and tunnels – Preventing high-sided vehicle crashes.
🚧 Underpasses and railway crossings – Where height restrictions apply.
🛣️ Multi-storey car park entrances – Ensuring only vehicles within clearance height enter.
🏢 Loading bays and warehouse entries – Warning delivery trucks and HGVs of height limits.
🛑 Construction zones with temporary height restrictions – Keeping vehicles aware of temporary barriers or scaffolding.
Proper placement of this sign ensures that drivers have enough time to react, preventing costly accidents and infrastructure damage.
Collisions with low bridges and tunnels are one of the most common causes of road damage and traffic congestion, often resulting in expensive repairs and road closures. Without proper warning, drivers may:
❌ Misjudge their vehicle height, causing serious damage to the structure and their vehicle.
❌ Be forced into last-minute braking, increasing accident risks.
❌ Cause major road delays, requiring emergency response teams.
The Diagram 530A sign ensures:
✔ Drivers of high-sided vehicles are aware of height restrictions in advance.
✔ Safer navigation in areas with low bridges, tunnels, or overhead obstructions.
✔ Reduced risk of damage to vehicles and road infrastructure.
This simple yet vital sign plays a critical role in accident prevention, particularly in urban areas, railway crossings, and industrial zones.
Our Diagram 530A Maximum Headroom Warning sign is built with premium materials to ensure maximum durability and visibility. Key features include:
🛡️ Rust-resistant aluminum – Ideal for permanent outdoor installations.
🌙 Superior nighttime reflectivity – Ensures visibility in low-light and foggy conditions.
🌦️ Weatherproof coating – Protects against rain, wind, snow, and UV exposure.
This sign is available in multiple mounting configurations to suit different locations:
📍 Post-mounted versions – Ideal for highways, city roads, and bridge approaches.
🏢 Wall-mounted options – Suitable for car park entrances and loading bays.
🚧 Temporary signage – Can be used in construction areas with temporary height restrictions.
Each version is designed for quick and efficient placement, ensuring immediate road safety improvements.
🛒 Visit our shop now:
https://morelock.co.uk/products/
Need Installation services?
Additional resources:
Driving rules
| Facing Type | Warranty Duration |
|---|---|
| RA1 | 7 years |
| R2/RA2 | 10 years |
| R3B/R3C | 12 years |
Enter your email address to get our special offers
