期刊
LIGHTING RESEARCH & TECHNOLOGY
卷 45, 期 3, 页码 362-376出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1477153512444112
关键词
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资金
- Engineering and Physical Sciences Research Council (EPSRC) [EP/H050817]
- EPSRC [EP/H050817/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H050817/1] Funding Source: researchfish
This paper uses data regarding detection of pavement obstacles to explore two approaches to establishing an appropriate illuminance for road lighting designed to meet the needs of pedestrians. A previous obstacle detection experiment was repeated using young observers under high pressure sodium (HPS) lighting. One approach was to identify whether there is a plateau-escarpment relationship between obstacle detection ability and illuminance - better detection with increasing light level until further increases bring little improvement: This suggested an appropriate illuminance of 5.7 lux. The second approach was to identify the size of an obstacle that a pedestrian should expect to be able to detect and the associated probability of detection: An obstacle of height 25 mm located 6 m ahead may require 1.8 lux to be detected with 95% probability.
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