There is a big push by dark sky advocates to have cities rethink their lighting. Nobody really expects metropolitan areas to just suddenly go replace existing lighting, but at least for new lighting installs to use dark sky friendly lights. These just keep light shining where it's needed (shining down) versus wasting energy by lighting upwards. Some cities are positively responding, and considering this when replacing/updating lights.

The astronomy campus I frequent works closely with the local and county government to replace lights to be more dark sky friendly as they are working to be officially recognized as a dark sky location.