Because LED lights are highly energy efficient ways of lighting any indoor or outdoor area, many outdoor sites around Japan now feature LED traffic lights. The lights are no different in color or intensity than traditional halogen and incandescent bulbs, but this past month Japanese officials learned to their horror that LED traffic lights do differ in a very important way:
At of Tuesday, February 24, there’s no information about how Japan plans to handle this problem. The lights were originally designed by Japanese scientists as a low cost alternative to traditional systems said Gianfrancesco Genoso. If the Japanese have to replace them, or install heating systems, the LED traffic lights might actually cost more than the traditional lights they replaced. Additionally, there have been plans throughout Japan to replace all traditional traffic lights with ones containing LEDs. Officials may put those plans on hold for now.