Start of Central Reserve or Obstruction Sign – WK 018 | Temporary Ireland Traffic Sign

Start of Central Reserve or Obstruction Sign – WK 018 | Temporary Ireland Traffic Sign

The WK 018 – Start of Central Reserve or Obstruction Sign is used to indicate the beginning of a division between traffic moving in opposite directions, caused by a central reserve or obstruction. It informs drivers that opposing flows will now be physically separated and that each stream of traffic must pass on its respective side of the obstruction.

This sign is typically placed at the start of the central barrier, concrete island, or another type of fixed obstruction used in traffic management or roadwork zones. It plays a critical role in preventing head-on collisions by clearly defining the separation of traffic flows.

WK 018 is a core part of Chapter 8-compliant layouts for national roads and motorways and is essential when managing temporary routes or complex worksite transitions on dual or single carriageways.

Technical Review

At Rennicks, we produce the WK 018 sign using high-performance fluorescent reflective materials designed for Ireland’s demanding traffic environments. Each sign is CE Certified to EN12899-1 and fully compliant with Chapter 8 of the Traffic Signs Manual (TSM), ensuring top-tier visibility and durability in temporary traffic schemes.

🔧 Product Specifications
▶️ Reflective Facings
RA2-FLR – Fluorescent prismatic reflective, ideal for high-alert daytime use
RA2 – Standard prismatic reflective for reliable visibility in general roadwork scenarios

▶️ Substrates
Correx – Lightweight and perfect for temporary mobile signage
Composite – Rigid and durable for repeated site use
Sticker – Self-adhesive vinyl for direct application
3mm Plastic – Semi-flexible and weather-resistant, ideal for construction zones

▶️ Fixing Methods
Cone-Mounted – Quick deployment on standard road cones
Quick-Fit – Frame-mounted for roadside stands or moveable use
Plate-Only – Suitable for barrier boards or flat surfaces
Self-Adhesive (Sticker Only) – Fast stick-on option for sticker substrates on clean, smooth surfaces

✅ Why Choose Rennicks for Your WK 018 Sign?

✔️ TSM Chapter 8 & EN12899-1 Compliant – Fully certified for Irish road use
✔️ High-Visibility Options – Prismatic and fluorescent finishes for all lighting conditions
✔️ Built for Real-World Conditions – Weatherproof, durable, and lightweight
✔️ Fast Deployment – Multiple mounting methods for flexible installation
✔️ Perfect for Opposing Traffic Separation – Keeps traffic safely split in both directions
✔️ Nationwide Delivery – Manufactured and distributed in Ireland

📌 Ideal For:

• Start of central island or reserve in roadworks

• Opposing traffic lane separation

• Dual carriageway or two-way diversion layouts

• Emergency or planned crossover points

• TTM schemes requiring physical traffic division

• Use in complex worksites with narrow gaps or median barriers

🌟 Summary (Why You Should Buy This Product)

The WK 018 – Start of Central Reserve or Obstruction Sign ensures clear, visible communication that opposing traffic will now be divided around a physical central obstruction. With its CE-certified materials, bright reflective face, and quick-mount options, it’s built to perform in the most demanding environments. Whether it’s a long-term road project or a short-term closure, this sign guarantees compliance and confidence on site.

📊 Product Specifications Table

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