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Elderly see pedestrians half as often as younger drivers, according to new research

Date:
March 7, 2011
Source:
American Associates, Ben-Gurion University of the Negev
Summary:
Researchers used two evaluation methods: driving in a traffic simulator while watching video of traffic scenes, and identifying hazardous situations. The video observation method showed that elderly drivers took longer to respond to pedestrian hazards. Approximately half of the pedestrian-related events presented in the videos were difficult for elderly drivers to perceive. The elderly group attempted to cope with hazards by reducing their driving speed by almost 20 percent, providing them more time to process the potential hazards.

Elderly drivers are half as likely to see pedestrians on the sidewalk due to a limited field of view, and compensate in part by driving more slowly, according to a study by Ben-Gurion University of the Negev (BGU) researchers.

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In the online edition of Accident Analysis and Prevention, the study compared reaction times and perception of pedestrians as hazards between experienced elderly and non-elderly drivers.

The study was conducted in response to an increasing number of pedestrian-related accidents among elderly drivers. Age 65 and older, the elderly are the fastest growing group in the Western world and more elderly drivers than ever are on the road.

BGU researchers used two evaluation methods: driving in a traffic simulator while watching video of traffic scenes, and identifying hazardous situations by pressing a button. The results of the video observation method showed that elderly drivers took longer to respond to pedestrian hazards. Approximately half of the pedestrian-related events presented in the videos were difficult for elderly drivers to perceive when compared with the non-elderly drivers.

The simulator drive test also revealed that the elderly performed "braking actions" half as often as the non-elderly group in response to pedestrians on sidewalks and shoulders. However, the elderly group attempted to cope with hazards by reducing their driving speed by almost 20 percent, providing them more time to process the potential hazards and dangers, even if they couldn't detect them.

"These findings strengthen the notion that elderly drivers, shown to have a narrower useful field of view (UFV), may also be limited in their ability to detect hazards, particularly when outside the center of their view," explains Tal Oron-Gilad, a researcher in the BGU Department of Industrial Engineering.

She recommends that while more research is needed, "authorities should be aware of these limitations and increase elderly drivers' awareness of pedestrians by posting traffic signs or dedicated lane marks that inform them of potential upcoming hazards."

The research was conducted in BGU's Human Factors Laboratories, which features a 2008 Cadillac sedan and sophisticated simulation technology. The multidisciplinary lab recently developed one of the world's only pedestrian simulation labs to conduct research on how pedestrians perceive and react to drivers.

Other BGU researchers that participated in this study include Shani Bromberg, Adi Ronen, Avinoam Borowsky and Yisrael Parmet.

The study was supported in part by a scholarship from the Ran Naor Foundation.


Story Source:

The above story is based on materials provided by American Associates, Ben-Gurion University of the Negev. Note: Materials may be edited for content and length.


Cite This Page:

American Associates, Ben-Gurion University of the Negev. "Elderly see pedestrians half as often as younger drivers, according to new research." ScienceDaily. ScienceDaily, 7 March 2011. <www.sciencedaily.com/releases/2011/03/110307101307.htm>.
American Associates, Ben-Gurion University of the Negev. (2011, March 7). Elderly see pedestrians half as often as younger drivers, according to new research. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2011/03/110307101307.htm
American Associates, Ben-Gurion University of the Negev. "Elderly see pedestrians half as often as younger drivers, according to new research." ScienceDaily. www.sciencedaily.com/releases/2011/03/110307101307.htm (accessed December 20, 2014).

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