Restricted Headroom Sign – W 110 | Permanent Ireland Traffic Sign
The Restricted Headroom Sign – W 110 is a vital warning sign used across Ireland’s road network to alert drivers—particularly those of large or high vehicles—of limited vertical clearance ahead. Featuring a clear numerical height indicator flanked by black arrows pointing up and down, this diamond-shaped sign is immediately recognisable and critical for preventing collisions with low bridges, tunnels, gantries, or overpasses.
As defined in Chapter 5 of the Traffic Signs Manual (TSM), the W 110 sign ensures that vehicle operators are forewarned of height restrictions in advance, allowing them to reroute or adjust as needed. It’s an essential safety measure on rural roads, urban streets, and construction access routes where low clearances can pose a serious risk.
Proper placement of this sign reduces the chance of infrastructure damage, protects road users, and helps keep Irish roads safer and better regulated for commercial haulage and tall vehicles.
Technical Review
All W 110 Restricted Headroom signs from Rennicks are manufactured to meet the highest standards of road safety compliance. Every sign is CE Certified to EN12899-1, ensuring visibility, durability, and compliance for long-term use in all weather conditions.
🔧 Product Specifications
▶️ Reflective Facings
• RA2 – Prismatic grade for enhanced visibility in rural or general use
• R3B – High-intensity microprismatic for areas with poor lighting or high HGV traffic
▶️ Substrates
• Aluminium – Corrosion-resistant and rigid for permanent installations
• Sticker – Self-adhesive vinyl for placement on existing signboards or structures
▶️ Fixing Methods
• Channel – Standard mounting method for poles and roadside posts
• Plate-Only – Suitable for flush mounting on walls or bridge undersides
• Self-Adhesive – Ideal for fixed infrastructure like tunnels or gantries
▶️ Sizes Available (mm)
300, 450, 600, 750, 900, 1200 – suitable for everything from local signage to motorway-grade applications
✅ Why Choose Rennicks for Your W 110 Restricted Headroom Sign?
✔️ Fully compliant with Chapter 5 of the Irish TSM and EN12899-1
✔️ Clear visual warning with height numerals and arrow indicators
✔️ Designed for haulage companies, councils, and contractors
✔️ Tough, weatherproof build for long-term performance
✔️ Multiple reflectivity grades and mounting options
✔️ Manufactured in Ireland with fast nationwide delivery
✔️ Backed by industry-leading support and compliance expertise
📌 Ideal For:
• Low-clearance bridges and underpasses
• Tunnel entrances and exits
• Construction zones with temporary height restrictions
• Industrial estate access points
• Loading bay areas and warehouse approach roads
• Roads frequented by high-sided vehicles or HGVs
🌟 Summary (Why You Should Buy This Product)
• ✅ Warns drivers of low vertical clearance ahead
• ✅ Prevents costly damage to vehicles and infrastructure
• ✅ TSM Chapter 5 and EN12899-1 certified
• ✅ High-visibility reflective options available
• ✅ Ideal for rural roads, cities, and logistics hubs
• ✅ Durable, weatherproof and easy to install
📊 Product Specifications Table
Feature | Options / Details |
---|---|
Sign Number | W 110 |
Product Name | Restricted Headroom Sign |
Standard Sizes | 300mm, 450mm, 600mm, 750mm, 900mm, 1200mm |
Reflective Grades | RA2, R3B |
Substrates | Aluminium, Sticker |
Fixing Methods | Channel, Plate-Only, Self-Adhesive |
Compliance | TSM Chapter 5, CE Certified, EN12899-1 Compliant |
Use Case | Permanent warning for low-clearance areas |
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