Roads: Lighting

Department of Health and Social Care written question – answered on 10th March 2020.

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Photo of Lord Patten Lord Patten Conservative

To ask Her Majesty's Government, further to the Written Answer by Baroness Blackwood of North Oxford on 29 January (HL525), what consideration they are giving to reducing the correlated colour temperature of LED lights in order to avoid any adverse affects on melatonin production in the evening.

Photo of Lord Bethell Lord Bethell The Parliamentary Under-Secretary for Health and Social Care

Public Health England reviews the scientific literature and maintains regular contact with research groups studying the impact of light exposure on melatonin production. People who received normal levels of light exposure during the day, especially from daylight, appear to be less susceptible to delayed onset of melatonin production in the evening from artificial lighting. The scope to address various performance parameters of lighting sits with the Department for Business, Energy and Industrial Strategy.

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