Visual Recovery and Discomfort Following Exposure to Oncoming Headlamps
Date Published: 2009-04-20
Paper Number:2009-01-0546
DOI: 10.4271/2009-01-0546
Citation:
Skinner, N. and Bullough, J., "Visual Recovery and Discomfort Following Exposure to Oncoming Headlamps," SAE Int. J. Passeng. Cars - Mech. Syst. 2(1):745-749, 2009, doi:10.4271/2009-01-0546.
A field experiment was performed to measure the effects of oncoming illuminance profiles with different photometric and temporal characteristics on visual recovery and subjective discomfort. Target detection time was correlated with the dosage, and rated discomfort was correlated with the peak illuminance of each profile. Older subjects generally had longer recovery times, but there were no differences between the age groups in terms of rated discomfort. The results suggest that discomfort glare is not predictive of visual disability and that control of luminous intensity at isolated points within the distribution of headlamps alone is not sufficient to minimize glare recovery.
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