Flagstaff, AZ has found options for LED streetlights that minimize the blue-rich color component: How Flagstaff, Arizona, switched to LEDs without giving astronomers a headache.
“Smart” adaptive driving beam (ADB) headlights are already in use in other parts of the world. Supposedly they know how to cut glare, but they are on high beams by default.
Citizen science offers a powerful tool for monitoring light pollution. Chapter 24 of the new book, Citizen Science: Innovation, Open Science, Society, and Policy by Hecker et al. reviews the various citizen science projects addressing light pollution. Lots of other interesting applications in this free download, too.