Streetlight LED Conversion

[danbrotherston]

"White provides better visibility." That's not true- the higher the kelvin, the more glare, and visibility is compromised. ...

While this sounds like a reasonable explanation, it is contradicted by (at least some of) the scholarly research on the subject which finds that detection distance is better (more distant ) of higher temp lights like metal halide and LED.  

I would guess this is likely because our eyes are optimally  adapted to see this colour light (it of course being closer to the colour of sunlight).

http://journals.sagepub.com/doi/abs/10.1...3515619777

Of course as you say there are other advantages to warmer light, it is not as likely to trick our brains into believing it is daytime etc.