A Novel Evaluation Method of Tunnel Access Zone Luminance Based on Measured Meteorological Data

Yuwei Zhang, Peng Xue (), Yifan Zhao, Zhikai Ni, Yani Quan, Jingchao Xie and Jiaping Liu
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Yuwei Zhang: Beijing Key Laboratory of Green Building Environment and Energy Saving Technology, Beijing University of Technology, Beijing 100124, China
Peng Xue: Beijing Key Laboratory of Green Building Environment and Energy Saving Technology, Beijing University of Technology, Beijing 100124, China
Yifan Zhao: Beijing Key Laboratory of Green Building Environment and Energy Saving Technology, Beijing University of Technology, Beijing 100124, China
Zhikai Ni: Beijing Key Laboratory of Green Building Environment and Energy Saving Technology, Beijing University of Technology, Beijing 100124, China
Yani Quan: Beijing Key Laboratory of Green Building Environment and Energy Saving Technology, Beijing University of Technology, Beijing 100124, China
Jingchao Xie: Beijing Key Laboratory of Green Building Environment and Energy Saving Technology, Beijing University of Technology, Beijing 100124, China
Jiaping Liu: Beijing Key Laboratory of Green Building Environment and Energy Saving Technology, Beijing University of Technology, Beijing 100124, China

Sustainability, 2023, vol. 15, issue 3, 1-20

Abstract: As the design basis of the tunnel lighting system, tunnel access zone luminance (TAZL) directly affects the energy efficiency of the tunnel lighting system and the driving safety of drivers. Affected by the relative position of the sun, weather conditions and other factors, the TAZL dynamically changes over time, but the existing tunnel mostly uses a fixed luminance value for the design and operation of the tunnel lighting system, which lacks a simplified method to obtain the real-time luminance. In this study, the L 20 (S) (the average luminance observed by the driver at 20° field of view) at the tunnel stopping sight distance is split, and the sky luminance is calculated by using the sky luminance model. While a segmented prediction model of the ground scenery luminance is established with the maximum sun height angle as the inflection point, the solar irradiance outside the tunnel is adopted as the input parameter. This new proposed L 20 (S) evaluation model is verified within the error of 5.41%, which provides a convenient and accurate method for the real-time measurement of TAZL.

Keywords: tunnel access zone luminance; tunnel lighting; L 20 (S); solar irradiance; predictive model (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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