Helping TfL to reduce the cost of lighting London's road network

The challenge

Transport for London (TfL) intend to reduce energy and maintenance costs by using LED lighting along its entire road network (TLRN). This vision will see improved reliability and lower operating costs, all contributing to better and safer roads. The A203, South Lambeth Road is just one example of the deployment of the DW Windsor solution.

Clients and partners

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  • Client


Key project requirements

  • Cost effective solution to meet the requirements of lighting Class M4 (0.75 cd /m2 Overall uniformity of 0.40 and longitudinal uniformity of 0.6).
  • Maximise the utilisation of existing column locations (where possible).
  • At junctions, the conflict areas are lit to Class C3 (15lux average with a 0.4 overall uniformity).
  • Future Proof specification to enable dimming / addition of CMS.

The solution

The designer compared several road lanterns and chose the DW Windsor Kirium Pro 2 to light this wide single lane traffic route, by considering optical performance, energy consumption, cost and customer services. The installed scheme presents a beautiful evenly lit carriageway as the designed results exceed the uniformity requirement at 0.46, whilst the maintained average lighting target was also met for each of the set requirements.

Our Kirium Pro provides a cost-effective solution for TfL with an exceptionally efficient (up to 138lm/W), quality light output. With a lifetime of 100,000 hours L90 B10, it requires little to no maintenance, minimising disruption by maintenance crews on this busy road.

Kirium Pro range

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