Despite being literally everywhere, intersections are one of the most unpredictable spots on the road. Any time vehicles and pedestrians have to move through the same space in different directions, there’s potential for a problem. But because every driver goes through several intersections a day, it’s easy to take it for granted that everything will go smoothly. My family got a harsh reminder of this recently when my brother-in-law was in a car crash. As he was driving throug