Fotios, S and Uttley, J orcid.org/0000-0002-8080-3473 (2018) Illuminance required to detect a pavement obstacle of critical size. Lighting Research and Technology, 50 (3). 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 pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > Institute for Transport Studies (Leeds) > ITS: Safety and Technology (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Dec 2018 15:50 |
Last Modified: | 18 Dec 2018 15:50 |
Status: | Published |
Publisher: | Sage Publications |
Identification Number: | 10.1177/1477153516659783 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:140114 |