Tunnel Lighting

Tunnel lighting: daytime reinforcement, power continuity and failure behaviour

A road tunnel uses more lighting energy by day than by night. Here is how daytime reinforcement stages are designed, what the L20 luminance meter must do when it fails, and how power continuity is structured in a confined environment.

Summary

A road tunnel uses more lighting energy by day than by night. Here is how daytime reinforcement stages are designed, what the L20 luminance meter must do when it fails, and how power continuity is structured in a confined environment.

Topics

  • tunnel daytime reinforcement lighting
  • L20 luminance meter tunnel
  • tunnel safety lighting EN 1838
  • tunnel lighting backup power
  • UNI 11095 tunnel control
  • tunnel lighting commissioning checklist

Category

Article from the Tunnel Lighting section. Reading time 11 min. Updated on 2026-07-26.