en.Wedoany.com Reported - WJ has completed a series of road marking and safety upgrade works on the A30 between Roseworthy and Hayle on behalf of National Highways. The works followed a comprehensive resurfacing of this busy section of the Strategic Road Network, creating the opportunity to apply long-life materials. These materials work in conjunction with the new pavement to reduce future maintenance needs and deliver whole-life cost value.
The primary longitudinal markings within the scheme, including edge lines and centre lines, were completed using WJ's Weatherline Ultra road marking system. This system utilises ultra-high performance glass beads to enhance retro-reflectivity. The road marking specification was a Type 2 system, designed specifically for enhanced wet night performance, featuring a profiled dot pattern. The raised dots sit slightly above surface water, allowing light to be reflected back to the driver rather than being absorbed by standing water. This profile also provides a subtle audible and tactile warning to drivers should they stray over the line, which is particularly effective on a high-speed, largely unlit route like the A30. Manual application elements, such as symbols and localised details, were completed using MMA (Methyl Methacrylate), reflecting its durability; cold-applied high friction surfacing was used in locations requiring enhanced skid resistance.
To further support lane guidance and visibility, particularly during night-time and in adverse weather conditions, WJ installed 2,420 Allux road studs along the route. Manufactured in the UK, these studs use high-pressure die-cast marine-grade recycled aluminium and are designed for long service life on heavily trafficked roads. A stabilising shaft and fixed lens system help keep the studs in place, while the 32mm drill hole minimises the pavement area requiring removal, reducing the risk of future defects around the fixing point. Persistent wet weather during construction impacted some of the planned MMA manual applications. In response, WJ collaborated with National Highways to review the products used and recommended the most suitable alternatives for the prevailing conditions, ensuring the programme remained on schedule while maintaining the required performance.
Along both carriageways between Roseworthy and Hayle, WJ installed approximately 22,000 metres of the Weatherline Ultra system along the lane edge lines and centre line. The system delivers high retro-reflective performance, with initial dry night values consistently above 500 mcd/lx/m², daytime performance achieving Q4 classification, and wet night values above 75 mcd/lx/m². Weatherline Ultra is designed for a service life of up to ten years, reducing future maintenance and traffic disruption, while supporting National Highways' carbon reduction targets through its low-carbon, bio-based binder technology. For the A30 project, its use resulted in a product emission saving of 40.53 tonnes of CO2 equivalent compared to conventional thermoplastic materials, a reduction of approximately 61%.
WJ CEO Wayne Johnston stated that the A30 project demonstrates how high-performance road marking solutions can deliver long-term safety, sustainability, and cost-effectiveness on the Strategic Road Network. By using durable, long-life materials such as Weatherline Ultra and Allux road studs, visibility and safety for road users are enhanced, while contributing to reduced future maintenance interventions and whole-life costs.
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