Turn signals in roundabouts should be required. Roundabouts can be a very efficient way of moving traffic through a cross in the road. However,  most roundabouts I've seen in the U.S. are filled with people that are too unsure of whether to drive or halt, causing long traffic jams that are no better than ones caused by traffic lights. Turn signals indicate the intention of the driver and if implemented correctly in a roundabout would end the needless stopping and "deer-in-headlights" looks. But obviously it doesn't work that way. Utopias, am I right?