LED lights
NC Elected Leaders Agree To Highway Lighting Upgrade
North Carolina's highways will become a little brighter for nighttime motorists through a deal in which anticipated energy savings by using LED lighting helps pay for the project.
Bright, Bluish-White LED Streetlamps Disrupt Sleep Cycles, AMA Says
The American Medical Association says some energy-efficient streetlamps interfere with circadian rhythms and also cause glare. It recommends that towns choose less intense, warmer-colored lights.