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Perceptions of visability and conspicuity of biomotion clothing configuration for road workers at road work sites

Wood, Joanne M., Marszalek, Ralph P., Lacherez, Philippe F., Tyrrell, Richard A. , & Chaparro, Alex (2010) Perceptions of visability and conspicuity of biomotion clothing configuration for road workers at road work sites. In Proceedings of Transportation Research Board 89th Annual Meeting 2010, TRB Publications , Marriott Wardman Park, Washington, DC.

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Abstract

Aims: This study determined whether the visibility benefits of positioning retroreflective strips in biological motion configurations were evident at real world road worker sites. ---------- Methods: 20 visually normal drivers (M=40.3 years) participated in this study that was conducted at two road work sites (one suburban and one freeway) on two separate nights. At each site, four road workers walked in place wearing one of four different clothing options: a) standard road worker night vest, b) standard night vest plus retroreflective strips on thighs, c) standard night vest plus retroreflective strips on ankles and knees, d) standard night vest plus retroreflective strips on eight moveable joints (full biomotion). Participants seated in stationary vehicles at three different distances (80m, 160m, 240m) rated the relative conspicuity of the four road workers using a series of a standardized visibility and ranking scales. ---------- Results: Adding retroreflective strips in the full biomotion configuration to the standard night vest significantly (p<0.001) enhanced perceptions of road worker visibility compared to the standard vest alone, or in combination with thigh retroreflective markings. These visibility benefits were evident at all distances and at both sites. Retroreflective markings at the ankles and knees also provided visibility benefits compared to the standard vest, however, the full biomotion configuration was significantly better than all of the other configurations. ---------- Conclusions: These data provide the first evidence that the benefits of biomotion retroreflective markings that have been previously demonstrated under laboratory and closed- and open-road conditions are also evident at real work sites.

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ID Code: 39870
Item Type: Conference Paper
Additional Information: papers of this conference are published in CD-ROM
Keywords: Night visibility, Protective Clothing, Retroreflectivity, Visability, Vision disorders
ISSN: 0115-1035
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > MEDICAL BIOCHEMISTRY AND METABOLOMICS (110100)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
Copyright Owner: Copyright 2010 [please consult the authors]
Deposited On: 03 Feb 2011 08:03
Last Modified: 01 Mar 2012 00:28

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