Effects of planar and nonplanar driver-side mirrors on subjective discomfort-glare responses among young and old.

Thurmon Lockhart, Bunji Atsumi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, we evaluated subjective nighttime discomfort-glare responds on three different types of planar and non-planar driver-side mirrors on two age groups. Fifty-six individuals (28 young [18-35 years] and 28 old [65 years and over]) participated in this experiment. Subjective discomfort-glare rating scores on three different types of driver-side mirrors were assessed utilizing De Boer's rating scale in a controlled nighttime driving environment (laboratory ambient illuminant level - l lux with headlight turned off). Three driver-side mirrors included: planar ("flat mirror" - reflectance ratio of 39.12%) and nonplanar ("curved mirror" - reflectance ratio of 8.78% and "blue mirror" - reflectance ratio of 7.77%; R=1400mm). The results indicated that with the same glare level (as measured by angle of incidence and illuminance on the front of the eyes), older adults reported lower De Boer's rating scores (i.e. worse feelings of glare) than their younger counterparts. Furthermore, the results indicated that both young and older adults reported lower De Boer's rating scores (i.e. worse feelings of glare) for planar driver-side mirror than non-planar driver-side mirrors. These results suggest that older adults' criterion of discomfort-glare is more sensitive than their younger counterparts, and importantly, the non-planar driver-side mirrors can be beneficial in terms of reducing nighttime discomfort-glare for both the young and the elderly.

Original languageEnglish (US)
Title of host publicationSAE Technical Papers
DOIs
StatePublished - 2004
Externally publishedYes
Event2004 SAE World Congress - Detroit, MI, United States
Duration: Mar 8 2004Mar 11 2004

Other

Other2004 SAE World Congress
CountryUnited States
CityDetroit, MI
Period3/8/043/11/04

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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