Throughout my daily commute I see many people making U-turns, some with ease, but the majority seems to encounter difficulty. The process itself isn't difficult, but dealing with your fellow commuters while performing the move can be. I feel that if vehicles were equipped with a U-turn signal drivers would be less likely to rear-end you and perpendicular drivers less likely to turn in front of you. The signal would apprise other commuters of your intention to make the sometimes dreadful maneuver, while possibly preventing an accident due to confusion.
Reward: Further assistance or advice on making this idea a reality, or an idea of equal or greater value.