Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Safety Evaluation of Lighting at Very Long Tunnels on the Basis of Visual Adaptation Publisher



Mehri A1 ; Sajedifar J2, 3 ; Abbasi M4, 5 ; Naimabadi A6 ; Mohammadi AA6 ; Teimori GH7 ; Zakerian SA3
Authors
Show Affiliations
Authors Affiliations
  1. 1. Department of Occupational Health Engineering, School of Public Health, Iranshahr University of Medical Sciences, Iranshahr, Iran
  2. 2. Department of Occupational Health Engineering, School of Public Health, Neyshabur University of Medical Sciences, Neyshabur, Iran
  3. 3. Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Research Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, Iran
  5. 5. Students’ Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Department of Environmental Health Engineering, School of Public Health, Neyshabur University of Medical Sciences, Neyshabur, Iran
  7. 7. Department of Environmental Health, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran

Source: Safety Science Published:2019


Abstract

Purpose: The present study aims to carry out safety evaluation of lighting at very long tunnels on the basis of visual adaptation in one of long tunnels in Ilam province. Methods: The required lighting in both lines of the tunnel was designed by considering equivalent veiling luminance, atmosphere luminance and windshield luminance. Moreover, luminance of different zones was measured using IESNA LM-71-96 and IESNA LM-50-99 standards in order to compare the designed values with measured values. Results: Veiling luminance in northern and southern lines of the tunnel are 116.7 and 127.5 cd/m 2 , respectively. Moreover, windshield luminance are, respectively, 220 and 238.4 cd/m 2 . In addition, atmosphere luminance are 290 and 307 cd/m 2 for northern and southern lines. According to these data, the designed luminance in threshold zone are 548 and 576 cd/m 2 for two northern and southern lines of the tunnel. Accordingly, the selected tunnel is very long, the required lighting in the first section of entrance zone are 6 and 6.2 cd/m 2 , and 2 and 2.3 cd/m 2 in the second section of entrance zone for northern and southern lines. Furthermore, the required lighting at the end of exit zone are 10 and 11.5 cd/m 2 for northern and southern lines. Eventually, designed values of luminance (cd/m 2 ) in the studied tunnel were compared with measured values of luminance (cd/m 2 ). Conclusions: Using surfaces with low reflection coefficients and planting trees and meadows in surroundings of the tunnel can decrease the required lighting. © 2019
Related Docs
1. The Evaluation of Luminance in a Road Tunnel Based on Cie88-2004 Standard to Reduce Road Accidents, Iran Occupational Health (2020)
2. An Empirical Investigation of Disability Glare and Visibility Level During Driving Inside Very Long Road Tunnels: A Case Study, Tunnelling and Underground Space Technology (2022)
3. The Effect of Veiling Luminance on the Disability Glare of Car Headlamps Designed in Iran, International Journal of Occupational Safety and Ergonomics (2022)
4. Survey of Discomfort Glare From the Headlamps of Cars Widely Used in Iran, Traffic Injury Prevention (2017)
5. Visual and Non-Visual Responses of Drivers to Simulated Led Headlights Varying in Correlated Colour Temperature, Lighting Research and Technology (2023)
Experts (# of related papers)
Seyed Abolfazl Zakerian (3)