This webinar provided an overview of the Austroads Report, ‘LED Lighting in Road Tunnels – Best Practice Approaches’ which summarises the process undertaken to explore tunnel lighting upgrades to LED, and provides best practice guidance for tunnel owners and operators considering the transition to more efficient lighting systems. Many existing tunnels currently use fluorescent or High Pressure Sodium (HPS) lighting, and there is a growing opportunity to replace or retrofit these with more efficient light emitting diode (LED) equivalents. While LED luminaires generally boasts higher efficacy than fluorescent and HPS equivalents, lighting upgrade projects can present major technical and cost challenges. Drawing on stakeholder consultations and a literature review, this webinar discussed current practices, common challenges, and practical considerations for planning and delivering lighting upgrades. Presenters used local case studies and project experiences to provide recommendations to support informed decision-making throughout the project lifecycle for future projects and also answered attendee questions at the end of the seminar.