<p>Light pollution is an important issue that requires effective strategies to mitigate its negative effects while meeting the needs of the community. People’s perceptions of light pollution can influence their behaviour and attitudes towards lighting practices, thereby impacting the success of light pollution reduction effort and improvements in urban quality of life. However, people’s feelings about the lighted environment can be influenced by personal experiences, expectations, and cultural background, leading to different perceptions of lighting than what is actually present. To understand the perception of light pollution, a street survey was conducted in Hong Kong with 220 pedestrians across three site locations. The survey collected information on demographics and assessed perceptions of illuminance, colour temperature, uniformity, and glare, which formed the perceived lighting quality (PLQ) index. The results showed that there is no difference in the level of comfort between males and females or between younger and older participants under certain lighting conditions. However, individuals with lower education levels reported significantly lower comfort levels compared to those with higher education levels. The study also found a strong negative correlation between PLQ and perceived illuminance level. Additionally, both perceived colour temperature and glare level have a significant correlation with PLQ. Perceived illuminance has a weak correlation with perceived colour temperature and glare level, but perceived illuminance increases with perceived glare. Policymakers and lighting designers need to consider the perceptions of light pollution to develop effective strategies that meet the needs of the community.</p>

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Perception of light pollution in urban areas: a ground measurement approach to understanding the community’s views in Hong Kong

  • Jimmy C. K. Tong,
  • Venus C. Y. Wan,
  • Michael C. F. Wong,
  • Rachel M. C. Yu,
  • Thomas T. H. Chan,
  • Edmond S. L. Lau,
  • Edwin C. F. Lau,
  • Arthur P. S. Lau

摘要

Light pollution is an important issue that requires effective strategies to mitigate its negative effects while meeting the needs of the community. People’s perceptions of light pollution can influence their behaviour and attitudes towards lighting practices, thereby impacting the success of light pollution reduction effort and improvements in urban quality of life. However, people’s feelings about the lighted environment can be influenced by personal experiences, expectations, and cultural background, leading to different perceptions of lighting than what is actually present. To understand the perception of light pollution, a street survey was conducted in Hong Kong with 220 pedestrians across three site locations. The survey collected information on demographics and assessed perceptions of illuminance, colour temperature, uniformity, and glare, which formed the perceived lighting quality (PLQ) index. The results showed that there is no difference in the level of comfort between males and females or between younger and older participants under certain lighting conditions. However, individuals with lower education levels reported significantly lower comfort levels compared to those with higher education levels. The study also found a strong negative correlation between PLQ and perceived illuminance level. Additionally, both perceived colour temperature and glare level have a significant correlation with PLQ. Perceived illuminance has a weak correlation with perceived colour temperature and glare level, but perceived illuminance increases with perceived glare. Policymakers and lighting designers need to consider the perceptions of light pollution to develop effective strategies that meet the needs of the community.