After spending several months driving with round points (French label) on overseas assignments I noticed that I had far less stress, got places quickly without sitting behind interminable lights, and occasionally had fun by going round the point once or twice while making up my mind about which way to go!
Way better solution than traffic lights in most, but not all, cases.
Truckee, California is now mostly roundabouts and it works very well, and no one misses the lights.