LED lights

Conservation Column: Springfield’s LED Street Lights

As many of you are aware, streetlights can negatively impact the health and welfare of both humans and birds. New streetlights purchased by the city of Springfield seem likely to exacerbate those impacts.

What’s the problem?

Impacts on people include: 

•Disruption of circadian rhythms. The light, especially the blue light, interferes with the natural production of melatonin, a hormone which regulates our natural daily rhythms. Interference with circadian rhythms causes sleep disruption which, in turn, increases sleepiness and decreases alertness during the day. Research suggests that an increase in certain diseases may be associated with artificial lighting at night.

•Light pollution obstructs our ability to view the night sky. According to the International Dark Sky Association, 4000Kelvin LED lights more than double light pollution. 

•LED lights increase glare, constricting the pupils and interfering with our ability to see, especially in the aging eye. This increases the risk of automobile and pedestrian accidents. Many compare LED light to a car heading toward you with its brights on. 

Impacts on birds include: