In the tunnel traffic environment, good lighting conditions are essential not only for ensuring safe driving but also for improving tunnel passage efficiency. Highway tunnel lighting differs from general road lighting as the luminaires are required to operate under all weather conditions. However, due to various factors, some lighting fixtures may experience light decay, which affects the lighting quality of the highway tunnel[1]. By drawing the tunnel road surface illuminance curve, the operational status of the tunnel lighting system can be understood, enabling an accurate assessment of the lighting quality. This study utilizes the inverse distance weighting (IDW) interpolation method and the kriging interpolation method to perform plane interpolation of tunnel road surface illuminance, resulting in the generation of the tunnel road surface illuminance curve. It is observed that the kriging interpolation method using the exponential function as the theoretical model for the semivariogram produces the best interpolation results.
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Chen et al. (2024) studied this question.
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