UK went led some time ago, and it is a serious nuisance. However, given them their due, in this county they didn't just replace the heads, they spent a lot of money removing the old lamposts (talking street, not major roads as they come under central government funding even if maintained by local government) and using a CAD like system to reposition the new ones at a far lower frequency (not only less per side of road, but staggered, ie not directly opposite each other, but alternating which side).
I've also got a sneaky suspicion that they replace the light part of the heads recently as they seem to point more down now and have a less wide luminance cone, and the sky glare looks a bit less.
Still not great, for example you can readily see colour at night now, unlike with old low pressure sodium days (high pressure sodium and especually mercury vapour were also quiet bad), once used to make distant towns when viewed from rural observing sites glow nicely orange as if radioactive.
Also, I think the albedo of tarmac/asphalt has the same albedo as Lunar Maria, and we know how bright they are at full Moon, even if the highlands are brighter.
No, the real fundamental pain (pain in the fundament) is the motion security cameras that come default set to light up if a molecule jiggles to much within a hundred yards, and a lot of people tend to leave anything they buy set on defaults.
[When I start a new computer, or upgrade an OS like m$ which loves to reset defaults traditionally, especially nosy ones, or install new software - especially browsers, I tend to have to spend ages deactivating lots of defaults, which invariably are all very clever but highly unnecessary and tend to slow stuff down. I started long ago as a computer user and find some assistance annoying (eg spell as you type or predictive text) but nowadays OSes seem to want to use you or restrict their flexibility of function at the human interface level, not necessarily precluding some linuxes].
EDIT : as humidity is never missing here the above photo of the petrol station reminds me of when the best nights used to be, after a fast front or storm had passed through and the air scrubbed by rain with there still being enough of a breeze (but not too much), skies only clearing about Sunset. These used to be the best skies around here for visual, seeing may still have been a bit damaged but transparency was great (in my view around here you can have one or the other and I always preferred good transparency as averaging seeing is fine for extended objects). Now as in the above wet station photo the LED just get reflected even more, even if they are recessed, small and heavily downward aligned.
Edited by yuzameh, 01 October 2024 - 01:28 PM.