Look before leaping into the LED bandwagon
Lodhie’s says he is in agreement with the American Medical Association’s report and recommendations (also in June) on the use of LED lights in environmental lighting and outdoor installations: Using the lowest emission of blue light to reduce glare and employing 3000 Kelvin (K) colour temperature or less. This is because there are indications the blue light (present in lights with colour temperatures 4000K and above) in most installed LED lighting disrupts people’s sleeping patterns (circadian rhythm), causing them to lose sleep, lose productivity and, eventually, end up unhealthy.
The trend to replace traditional street lighting (usually yellow-orange sodium) with LED lights has increased in the last few months. While the potential cost savings are real, this has also led to many complaints about how the bright and harsh the new LED lighting replacements are affecting their sleep. One place that became famous for complaining about their new LED lights is the city of Davis, California. The complaints became so heated that Davis administrators halted the LED lighting conversion and instead opted for a place to showcase various LED street lights (with different colour temperatures and light coverage) so city residents could vote for their favourites online. This move quieted down the complaints.