Report
Pedestrian post-twilight illuminance levels for security, visual comfort, and related parameters: the case of public parks in New Delhi
Cities & Health, v 8, pp 1-7
07 Jul 2023
Abstract
This paper measures the illuminance level during the post-twilight darkness on the walking path of a famous public park in New Delhi. The readings, 252 in number, were mapped on a map using Global Positioning System and were measured using a lux meter at regular intervals throughout the pathway. The required illuminance depends upon multiple factors, including visual comfort, safety, security, prevention of light pollution and energy-saving concerns. In a limited scope, this paper has only looked at the measured values and checked whether they fall within the limits of visual comfort derived from literature and security as taken from the Indian lighting standard. The readings show that about one-third of the points on the pathway have zero illuminance levels. Among the rest, 127 of the 252, about half the points were at the level of comfort of 1 to 2 lux. The remaining one-third of the total was over-illuminated from the visual comfort point of view but appropriate from the security approach, which requires readings above 5 lux. It is recommended that instead of the proper focus on lighting levels, uniformly distributed light at an equally distributed spacing throughout the pathway would be more appropriate. Bollard-based lighting focusing on the pathway will be more suitable than the existing high street lamps. This will not only provide lighting for security and comfort but will also prevent light pollution. Such studies must be repeated across parks and streets in India, and more factors like light temperature should be studied further
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1 citations in Scopus
Details
- Title
- Pedestrian post-twilight illuminance levels for security, visual comfort, and related parameters: the case of public parks in New Delhi
- Creators
- Raja Singh - School of Planning and Architecture Delhi
- Publication Details
- Cities & Health, v 8, pp 1-7
- Publisher
- Routledge
- Resource Type
- Report
- Language
- English
- Academic Unit
- Dana and David Dornsife School of Public Health
- Scopus ID
- 2-s2.0-85164619835
- Other Identifier
- 991022021016004721