How did the City determine streetlight wattages and brightness levels?
In the 1990s, the City unified the city’s streetlights by street classification (arterial, connector, and residential). This project largely follows what was done then by replacing HPS streetlights with LED streetlights that have the same perceived level of brightness as the old lights. However, there are a few exceptions: lighting in downtown urban areas will receive LED streetlights of slightly lower perceived brightness than the old HPS lamps; lighting along residential streets that are used during rush hour as cut-through streets will receive the same wattage (and brightness) of streetlight as all other residential areas (these streets had brighter lamps previously); and the amount of brightness in the industrial park will be greatly reduced by using lower power and fewer streetlights.

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1. What is the entire scope of the conversion program?
2. How will this conversion effect the city’s energy use and budget for streetlights?
3. What other benefits are there in an LED conversion?
4. What is an LED?
5. What type of streetlights did the LED streetlights replace?
6. What does color temperature mean?
7. Hasn't the American Medical Association (AMA) raised health concerns about LED streetlights?"
8. Shouldn’t the new LED streetlights be shielded so that drivers cannot see the source of light?
9. Will new LED streetlights produce unwanted spill light?
10. How do I report an LED outage or request a house shield?
11. Does the City use LEDs for any other fixtures currently?
12. How did the City determine streetlight wattages and brightness levels?
13. Did the City consider a wireless control system that would allow dimming of the streetlights?
14. Have the LED streetlights resulted in higher levels of blue light?
15. Is there a connection between LED streetlights and circadian sleep cycles?
16. What other Massachusetts municipalities have converted streetlights to LED?