There’s a purple-bluish glow coming from some of the lights above highways in Western Pennsylvania. It’s a bizarre look. What ...

His suit highlights concerns about LED lighting’s impact on individuals ... California Department of Transportation and Federal Highway Administration — have failed to complete environmental ...

“Headlight intensities have actually been increasing in part because of things like the Insurance Institute for Highway Safety ’s safety ratings,” which the insurance company-backed nonprofit doles ...

The signs have simple LED lights powered by a solar panel. According to MnDOT, they are generally illuminated all day unless it is cloudy for an extended period of time. Drivers should expect to ...