MOTORWAY LIGHTING

Experts in Motorway Lighting

At Molloy Consulting Engineers, we specialise in the design and upgrade of motorway and high-speed road lighting. From large-scale new builds to nationwide LED retrofits, we deliver lighting solutions that ensure safety, visibility, and long-term reliability under the most demanding traffic conditions.

Our work supports key infrastructure across Ireland and the UK, helping clients meet strict standards while improving energy efficiency and reducing long-term maintenance costs.

National and International Project Experience

We’ve delivered motorway lighting design and LED conversion projects for some of the busiest and most strategic roads in Ireland, including:

  • M7, M1, M4, M6, M8, M3 – Full LED redesigns and photometric upgrades
  • N25 – Dual carriageway lighting optimisation
  • N40 Cork South Ring Road – Urban motorway lighting improvements
  • M20 Limerick–Cork Scheme – Design input for new motorway sections, active travel routes and 9 depots.

We’ve also worked on key international projects, such as:

  • Dalry Bypass (Scotland) – Design support and standards compliance
  • A6 Dual Carriageway Scheme (Northern Ireland) – 25.5 km stretch between Dungiven and Drumahoe

Performance-Driven Design

Our approach to motorway lighting prioritises:

  • Driver safety through optimal light class selection and uniformity
  • Reduced glare and improved visibility in high-speed zones
  • Energy savings through efficient LED luminaire selection and CMS integration
  • Minimal maintenance with long-life systems and smart column spacing

Each design is built to operate reliably in exposed environments and supports ease of access for future inspections or upgrades.

Compliance and Technical Standards

All designs meet or exceed the following standards:

  • EN 13201 – Road lighting performance and classification
  • BS 5489-1:2020 – Public lighting code of practice
  • BS EN 60598-2-3 – Luminaires for road and street lighting
  • TII Publications – Including DN-LHT-03034 and other national guidance
  • DMRB – For UK or Northern Ireland-based schemes
  • BS 7671 – Electrical installation compliance
  • Integration with ITS and TII asset management systems where required

What We Provide

  • Full lighting layout design with column positions, mounting heights, and cable routes
  • LED retrofit proposals, including energy and lifecycle analysis
  • Junction-specific designs with tailored light classes
  • Coordination with civil and electrical teams for seamless delivery
  • Drawings and specifications for tender, planning, and construction
  • Rapid design adjustments based on site or authority feedback

If you’re planning or upgrading a motorway or regional road scheme, we’ll ensure your lighting design is compliant, buildable, and future-ready. Get in touch to discuss how we can support your next infrastructure project.