Volume 43 Number 5, September/October 2006
Pages 771 — 776
Abstract - Recognition distance of pedestrian traffic signals by individuals with low vision
Michael D. Williams, PhD;1* Ron Van Houten, PhD;2 Bruce B. Blasch, PhD1
1Rehabilitation Research and Development Center of Excellence for Aging Veterans with Vision Loss, Atlanta
Department of Veterans Affairs Medical Center, Decatur, GA; 2Mount Saint Vincent University, Halifax, Nova Scotia, Canada
Abstract — Forty-one individuals with moderate-to-severe vision loss participated in a study to determine the minimum distance they required to correctly identify three different pedestrian traffic icon symbols, one of which was presented with an augmented light source. We found that subjects could identify the WALK icon without the augmented light source information, or animated eyes, from farther away than either the WALK icon with the augmented light source information or the DON'T WALK icon. These results differ from those of a previous study, which found that subjects could correctly identify the WALK icon with the augmented light source from a greater distance than the WALK or DON'T WALK icons without the augmented light source.
Key words: accessible pedestrian signals, animated eyes, blindness, crosswalk signals, low vision, low-vision pedestrians, pedestrians, recognition distance, traffic icons, vision rehabilitation.