Impacts of Fog Characteristics, Forward Illumination, and Warning Beacon Intensity Distribution on Roadway Hazard Visibility

Table 2

Backscattered luminance caused by headlights for different headlight source intensities, visibility ranges, and scattering coefficients.

Forward light source intensity (cd)	Visibility range (m)	Scattering coefficient ()	Backscattered luminance (cd/m^2)
30,000	50	0.3	4.57
		0.8	0.58
	200	0.3	2.17
		0.8	0.36
	600	0.3	0.87
		0.8	0.13
100,000	50	0.3	15.32
		0.8	3.03
	200	0.3	7.27
		0.8	1.18
	600	0.3	2.96
		0.8	0.46