Las Vegas has some communication from traffic signals to vehicles [1]. I can't tell from the article how it is implemented; it might just be that the city's tr

Las Vegas has some communication from traffic signals to vehicles [1]. I can't tell from the article how it is implemented; it might just be that the city's traffic control computer sends traffic light information out, instead of individual lights communicating. [1] http://www.theverge.com/2016/12/12/13923254/audi-v2i-las-vegas-test-drive-traffic-signals http://www.theverge.com/2016/12/12/13923254/audi-v2i-las-veg...