Impact of LED Color Temperatures on Perception Luminance in the Interior Zone of a Tunnel considering Fog Transmittance

<div>The impact of the luminance and the concentration of fog on perception luminance. (a) The theoretical calculation results of perception luminance under different luminance and fog concentration, CCT = 6500K. (b) The experimental results of the average scores of 50 subjects on visual perception under different luminance and fog concentration, CCT = 6500K. Error bars indicate standard deviation.</div>

Advances in Civil Engineering

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Figure 15

Figure 15: Impact of LED Color Temperatures on Perception Luminance in the Interior Zone of a Tunnel considering Fog Transmittance 