Yellow light is horrible though. It seems to make everything really dark in my neighborhood. Most parts of the city are switching to white LED lights here and they feel much better.
When it comes to using lights that actually allow the night sky to be seen, that's kind of the point.
Here ( https://upload.wikimedia.org/wikipedia/commons/c/cf/Tokyo_To... ) is a pic of the Tokyo Tower in Japan => I read that apparently they often use yellow light during winter on snowy/foggy days to provide a sense of "warmth", during summer they tend to use more often white light => interesting.
I know it's psychological, but white light also gives me a better sense of security walking at night on the street.
* https://www.darksky.org/why-is-blue-light-at-night-bad/
Another study on crime and streetlights:
> A 2015 study published in the Journal of Epidemiology and Community Health found that streetlights don’t prevent accidents or crime, but do cost a lot of money. The researchers looked at data on road traffic collisions and crime in 62 local authorities in England and Wales and found that lighting had no effect, whether authorities had turned them off completely, dimmed them, turned them off at certain hours, or substituted low-power LED lamps.
* https://www.darksky.org/light-pollution/lighting-crime-and-s...