An investigation shows that light pollution from Vienna’s street lighting has been reduced by 75 percent – thanks to a successful collaboration between the city and science.
An investigation shows that light pollution from Vienna’s street lighting has been reduced by 75 percent – thanks to a successful collaboration between the city and science.
The large dark sky reserve here in NZ uses 2000K LEDs for all street lighting.
I can’t find an article detailing the streetlights they use. Like you’ve noted, and the bollard pictured in that article, they’re designed to spill zero light above horizontal.