Seeing pedestrians at night : visual clutter does not mask biological motion

Tyrrell, Richard A., Wood, Joanne M., Chaparro, Alex, Carberry, Trent P., Chu, Byoung-Sun, & Marszalek, Ralph P. (2009) Seeing pedestrians at night : visual clutter does not mask biological motion. Accidents Analysis and Prevention, 41(3), pp. 506-512.

View at publisher


Although placing reflective markers on pedestrians’ major joints can make pedestrians more conspicuous to drivers at night, it has been suggested that this “biological motion” effect may be reduced when visual clutter is present. We tested whether extraneous points of light affected the ability of 12 younger and 12 older drivers to see pedestrians as they drove on a closed road at night. Pedestrians wore black clothing alone or with retroreflective markings in four different configurations. One pedestrian walked in place and was surrounded by clutter on half of the trials. Another was always surrounded by visual clutter but either walked in place or stood still. Clothing configuration, pedestrian motion, and driver age influenced conspicuity but clutter did not. The results confirm that even in the presence of visual clutter pedestrians wearing biological motion configurations are recognized more often and at greater distances than when they wear a reflective vest.

Impact and interest:

33 citations in Scopus
31 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

841 since deposited on 26 Jan 2010
69 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 29994
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Pedestrian, Visibility, Conspicuity, Night Driving
DOI: 10.1016/j.aap.2009.02.001
ISSN: 0001-4575
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2009 Elsevier Ltd
Deposited On: 26 Jan 2010 23:18
Last Modified: 21 Jun 2017 14:43

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page