Ask residents who get the white light pollution into their houses, and drivers who are temporarily blinded by the white light, and driving in fog is easier with yellow
sodium lights (one reason why they were chosen many years ago).
At 80W, the lumen output jumps to 6860, weighs in at 780g and replaces a 250 - 400W Metal Halide/ High Pressure
Sodium light.
Unlike
sodium lights, LEDs and other next-generation lights can be tuned to various colors, easily dimmed, arranged into luminous surfaces and shapes, and turned on and off instantly....
According to Paula Rodgers, lighting project manager at the Lighting Research Center at Renssalaer Polytechnic Institute in Troy, New York, the once-common low-pressure
sodium light is increasingly difficult to find and often must be special ordered, making it increasingly expensive.
Assistant City Administrator Lawrence Bantiding told reporters that the project is part of the transition to LED street lights as Mayor Sara Duterte mentioned in her 2018 state of the city address.'This is our guidance that we will soon transition into led where in fact, our busted
sodium lights are replaced by LED lights,' Bantiding said.
Phillips said savings from the switch would add up, noting that the older, high-pressure
sodium lights burn at 400 watts, taking up more power than the new-tech light-emitting diode (LED) bulbs, which are at 100 watts yet are much more brilliant.
The conversion has also removed the risk of the council being unable to source
sodium lights after manufacture of components ceased during 2017, with the production of lamps set to end in 2020 as part of the European Union Energy Saving Directive.
Carlito Rosal, head of the power room of the Provincial General Services Office (PGSO), said the provincial government had installed
sodium lights around the capitol, which had become one of the province's tourist attractions.