Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Safety Evaluation of the Lighting at the Entrance of a Very Long Road Tunnel: A Case Study in Ilam

Tue Oct 4 14:23:28 2022

(2017) Safety Evaluation of the Lighting at the Entrance of a Very Long Road Tunnel: A Case Study in Ilam. Safety and Health at Work. pp. 151-155. ISSN 2093-7911

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Abstract

Background: At the entrance of a tunnel, reflection of sunlight from the surrounding environment and a lack of adequate lighting usually cause some vision problems. The purpose of this study was to perform a safety evaluation of lighting on a very long road in Ilam, Iran. Methods: The average luminance was measured using a luminance meter (model S3; Hagner, Solna, Sweden). A camera (model 108, 35-mm single-lens reflex; Yashica, Nagano, Japan) was used to take photographs of the safe stopping distance from the tunnel entrance. Equivalent luminance was determined according to the Holliday polar diagram. Results: Considering the average luminance at the tunnel entrance (116.7 cd/m(2)) and using Adrian's equation, the safe level of lighting at the entrance of the tunnel was determined to be 0.7. Conclusion: A comparison between the results of the safe levels of lighting at the entrance of the tunnel and the De Boer scale showed that the phenomenon of black holes is created at the tunnel entrance. This may lead to a misadaptation of the drivers' eyes to the change in luminance level at the entrance of the tunnel, thereby increasing the risk of road accidents in this zone. (C) 2016, Occupational Safety and Health Research Institute. Published by Elsevier.

Item Type: Article
Creators:
CreatorsEmail
Mehri, A.UNSPECIFIED
Hajizadeh, R.UNSPECIFIED
Dehghan, S. F.UNSPECIFIED
Nassiri, P.UNSPECIFIED
Jafari, S. M.UNSPECIFIED
Taheri, F.UNSPECIFIED
Zakerian, S. A.UNSPECIFIED
Keywords: black hole De Boer scale safe level of lighting tunnel lighting traffic accidents model design Public, Environmental & Occupational Health
Divisions:
Page Range: pp. 151-155
Journal or Publication Title: Safety and Health at Work
Journal Index: ISI
Volume: 8
Number: 2
Identification Number: https://doi.org/10.1016/j.shaw.2016.06.002
ISSN: 2093-7911
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/283

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