Fotios, S. orcid.org/0000-0002-2410-7641 and Uttley, J. (2018) Illuminance required to detect a pavement obstacle of critical size. Lighting Research and Technology, 50. pp. 390-404. ISSN 1477-1535
Abstract
This paper investigates the illuminance needed to detect trip hazards for pedestrians walking after dark. In previous work it was assumed that the critical obstacle height is 25 mm: further review of accident data and foot clearance data suggests instead that 10 mm is the critical height. Eye tracking records suggest a tendency for obstacles to be detected approximately 3.4 m ahead. Interpretation of obstacle detection data suggests horizontal photopic illuminances of up to 0.9 lux are required for peripheral detection of a 10 mm obstacle 3.4 m ahead, according to the scotopic/photopic ratio of the lighting and the age of the observer.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Chartered Institution of Building Services Engineers 2015. This article is distributed under the terms of the Creative Commons Attribution 3.0 License (http://www.creativecommons.org/licenses/by/3.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > School of Architecture (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/M02900X/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 21 Jul 2016 10:44 |
Last Modified: | 01 May 2018 10:11 |
Published Version: | https://doi.org/10.1177/1477153516659783 |
Status: | Published |
Publisher: | SAGE Publications |
Refereed: | Yes |
Identification Number: | 10.1177/1477153516659783 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:102745 |