Pittsburgh begins its $15 million replacement of all 35,000-plus streetlights around town over the next two years.

Over the years, a number of cities have experimented with their streetlights, sometimes turning them up and sometimes ... “notable increases” in the first six months. The evaluators speculated ...

As cities around the world ditch old school sodium-vapor streetlights ... As to why they're turning purple: in a nutshell, modern LEDs convert electricity to light via an electronic chip.

The "spotlight" he's referring to is a new LED streetlight, which appears much brighter than the traditional high-pressure sodium lamp that was there before. High pressure sodium streetlights emit ...

"When they were first installed they were ... That included replacing 2,500 high-pressure sodium lights with LED lights in Linden. Crews are calibrating streetlights in Linden now and will ...

Anecdotal reports of purple streetlights have been popping up around ... on social media with many drivers wondering who or what is turning the lights a resplendent violet? The answer, apparently ...

At a press conference in the Manchester neighborhood Tuesday evening, Mayor Ed Gainey instructed crews to turn on the new LED streetlights — a vivid contrast to the old high-pressure sodium ...