Tool for analysis of tunnel lighting based on visual performance and visual comfort

Dennis Dan Corell, A. Jørgensen, P. Hafdell, A. Ekrias, K. Sørensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


This study describes a method to derive a profile of the road surface luminance in long tunnels based on visual performance and visual comfort and its implementation in an excel file, which is freely available to anybody with an interest. The method presents an alternative approach to the dimensioning of tunnel lighting, compared with the method of CIE 88:2004 (CIE, 2004). As a minimum, the method can be used to reveal the influence of various parameters, such as the age of the driver. If accepted to a sufficient degree, the method can be used as a starting point for the design of tunnel lighting installations or modification of national standards. Calculations show in particular a strong influence of the driving speed – or rather with the stopping distance associated with the driving speed. At low to medium driving speeds, the transition zones can be shorter than reflected by the standard curve from (CIE, 2004).
Original languageEnglish
Title of host publicationProceedings of the 29th CIE SESSION
Number of pages8
PublisherCIE - International Commission on Illumination
Publication date2019
Article numberPO166
Publication statusPublished - 2019
EventCIE 2019 29th Quadrennial Session - Washington DC, United States
Duration: 14 Jun 201922 Jun 2019


ConferenceCIE 2019 29th Quadrennial Session
CountryUnited States
CityWashington DC
Internet address


  • Tunnel lighting
  • Visibility level
  • Visual performance
  • Visual comfort
  • Calculation tool

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