This presentation discussed the various types of tunnel lighting and the development of tunnel lighting in Australia using case studies from various tunnel projects in Australia will describe the types and functionality of tunnel lighting systems. Tunnel lighting functionalities include: – Normal lighting that provides appropriate visibility for users, both day and night – Safety lighting that provides minimum visibility for users, to enable them to leave the tunnel in their vehicles in case of power outage. – Egress lighting to guide tunnel users on foot in the event of an emergency.