God made turn signals on cars in order to allow the driver of car one to let the drivers of cars two through ad infinitum know that he or she was planning to turn onto a street or into a different lane. This is not a hard concept. Putting your turn signal on when you are already halfway into the other lane is plain stupid. Most of the cars around you already get what you are planning to do and are cursing you silently under their breath for not signaling in advance. Putting your turn signal on at that point merely proves what they already think of you….and it’s not very nice.