Manufacturers originally designed double-ended high-pressure sodium light bulbs so they would be compatible with double-ended metal halide fixtures. Traditional single-ended high-pressure sodium bulbs ...

Alliant Energy had been studying replacing the high-pressure sodium light bulb casting a yellowish-orange glow on downtowns and residential streets around Iowa with a more efficient, brighter white ...

The Municipal Corporation of Dehradun MCD) is to replace all the sodium bulbs with LED in all the 100 wards under its purview. The work of replacing sodium lights in the 60 older wards is an ongoing ...

Traffic Technician for the Traffic Control and Engineering department for the City of Allentown, Brian Sigoda of Allentown changes the high pressure sodium light bulb in a lamppost on 6th Street in ...

And it will have taken about eight years in all to swap out all of those old-style streetlights across Mankato with high-efficiency LED lights. It was the summer of 2017 when a private electrician ...

CULPEPER, Va. (WUSA9) -- Things may look a little brighter the next time you go to downtown Culpeper. Town officials tell us that crews have started replacing high-pressure sodium bulbs with more ...

New York is changing its color. For decades, the city relied on high-pressure sodium lamps to light its streets, parks and highways. The bulbs were a cheaper, more efficient alternative to the mercury ...

New research indicates that exposure to the light of white LED bulbs suppresses melatonin 5 times more than exposure to the light of High Pressure Sodium bulbs New research indicates that exposure to ...

Windsorites could see more clearly in the future. An administration report going to city council Aug. 4 recommends that Windsor convert all 22,000 of its standard street lights from the current ...