As a society we really need to start reducing light pollution. It doesn't take much to shield the tops of streetlights and advertisements to at least make the majority of their light point downward.
UK: The led based street lights that I have seen locally do have shields and diffusers. Still very blue though.
[1] http://www.huffingtonpost.ca/2015/12/02/calgary-from-space_n...
[2] http://www.calgary.ca/_layouts/cocis/DirectDownload.aspx?tar...