When I sit at red lights in a turning lane, I usually end up staring at the car's turn signal that is in front of me and listen to the click of mine.  I cannot stand when the 2 go off sync.  I think there should be a radio signal broadcast throughout the world that has a 1Hz frequency.  Then every car would have an antenna to receive this pulse and blink the turn signal off of this, resulting in everyone having the same turn signal flash rate.