Street crossing behavior in younger and older pedestrians: an eye- and head-tracking study

Zito, Giuseppe Angelo; Cazzoli, Dario; Scheffler, Loreen; Jäger, Michael; Müri, René Martin; Mosimann, Urs Peter; Nyffeler, Thomas; Mast, Fred; Nef, Tobias (2015). Street crossing behavior in younger and older pedestrians: an eye- and head-tracking study. BMC Geriatrics, 15(1), p. 176. BioMed Central 10.1186/s12877-015-0175-0

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BACKGROUND: Crossing a street can be a very difficult task for older pedestrians. With increased age and potential cognitive decline, older people take the decision to cross a street primarily based on vehicles' distance, and not on their speed. Furthermore, older pedestrians tend to overestimate their own walking speed, and could not adapt it according to the traffic conditions. Pedestrians' behavior is often tested using virtual reality. Virtual reality presents the advantage of being safe, cost-effective, and allows using standardized test conditions. METHODS: This paper describes an observational study with older and younger adults. Street crossing behavior was investigated in 18 healthy, younger and 18 older subjects by using a virtual reality setting. The aim of the study was to measure behavioral data (such as eye and head movements) and to assess how the two age groups differ in terms of number of safe street crossings, virtual crashes, and missed street crossing opportunities. Street crossing behavior, eye and head movements, in older and younger subjects, were compared with non-parametric tests. RESULTS: The results showed that younger pedestrians behaved in a more secure manner while crossing a street, as compared to older people. The eye and head movements analysis revealed that older people looked more at the ground and less at the other side of the street to cross. CONCLUSIONS: The less secure behavior in street crossing found in older pedestrians could be explained by their reduced cognitive and visual abilities, which, in turn, resulted in difficulties in the decision-making process, especially under time pressure. Decisions to cross a street are based on the distance of the oncoming cars, rather than their speed, for both groups. Older pedestrians look more at their feet, probably because of their need of more time to plan precise stepping movement and, in turn, pay less attention to the traffic. This might help to set up guidelines for improving senior pedestrians' safety, in terms of speed limits, road design, and mixed physical-cognitive trainings.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > University Psychiatric Services > University Hospital of Geriatric Psychiatry and Psychotherapy
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Gerontechnology and Rehabilitation
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology
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07 Faculty of Human Sciences > Institute of Psychology > Cognitive Psychology, Perception and Methodology
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Zito, Giuseppe Angelo; Cazzoli, Dario; Scheffler, Loreen; Jäger, Michael; Müri, René Martin; Mosimann, Urs Peter; Nyffeler, Thomas; Mast, Fred and Nef, Tobias

Subjects:

600 Technology > 610 Medicine & health
100 Philosophy > 150 Psychology
500 Science > 570 Life sciences; biology
600 Technology > 620 Engineering

ISSN:

1471-2318

Publisher:

BioMed Central

Language:

English

Submitter:

Vanessa Vallejo

Date Deposited:

08 Jan 2016 13:55

Last Modified:

26 Jun 2016 02:09

Publisher DOI:

10.1186/s12877-015-0175-0

PubMed ID:

26714495

Uncontrolled Keywords:

Gerontechnology

BORIS DOI:

10.7892/boris.74675

URI:

https://boris.unibe.ch/id/eprint/74675

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