Check out this great continuing education article from Architectural Record on the lighting control revolution
"(...) These IoT capabilities present new possibilities for outdoor lighting systems at the urban scale. Manufacturers such as Philips and Current by GE offer connected lighting that goes well beyond turning streetlamps on or off. For instance, Philips is working with the city of Los Angeles and has outfitted its light poles with sensors that allow municipal managers to track energy use, determine if a particular lamp needs maintenance, and monitor grid health by detecting power fluctuations or surges. Some of the functionality has little to do with illumination: in September, the company completed a pilot installation of acoustic-sensing modules on 30 of LA’s streetlights. Susanne Seitinger, leader of Philips’s Global Smart Cities division, explains that the sensors process, map, and analyze peaks and averages rather than record sound. Some of the potential benefits are faster emergency response times after a car crash, or the ability to monitor noise pollution. (...)"