“Some cities are taking another look at LED lighting after AMA warning.”
That was the headline from a Washington Post article last Sunday, discussing the pushback against modern Light Emitting Diode streetlights in local communities. While the new streetlights are more energy efficient, last longer and save money compared to older sodium lights, some say they are too bright or cast to harsh of a light.
The American Medical Association warns that excessive blue light from certain LED streetlights could “disturb sleep rhythms and possibly increase the risk of serious health conditions,” according to the Post. Localities, however, say LED streetlights are not only more economical and more ecological, but are safer for drivers as well, helping to improve visibility on streets.
In Arlington, 85 percent of the more than 7,000 county-owned streetlights are now LED, according to Arlington Dept. of Environmental Services spokeswoman Katie O’Brien. Arlington’s streetlights operate at 5500 Kelvin, she said, casting a bluer tint than the warmer 3000K color temperature recommended by the AMA. The blue tint has been compared to that cast by natural moonlight.
When LED streetlights were first rolled out in Arlington neighborhoods, there were loud complaints from some groups of residents. Since then, O’Brien said, many of the complaints about lighting technology — more than 50 formal complaints between 2013 and 2016 — have been addressed.
“The County has installed shields on county-owned LED streetlights to help better direct the light towards the sidewalk and street,” she said. “Most LED streetlights are also on a dimming schedule to decrease in brightness throughout the course of the night, dimmed as low as 25% of full brightness.”
Nonetheless, the county is studying the AMA report.
“Arlington County streetlights meet current federal standards,” O’Brien said. “The County is studying AMA’s report that LED lights may have negative health and environmental impacts. We are researching this issue and will consider this report, industry standards, and other factors in making a final decision around LED streetlight temperature as part of the County’s Street Light Management Plan that will be completed in 2017. Additionally, our staff will work closely with Arlington’s Public Health Division throughout this process.”
LED streetlights are 75 percent more energy efficient than older models. Arlington expects to save $1 million annually once all county streetlights are converted to LED technology.
What do you think about LED streetlights in Arlington?
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