Nite Ize SpokeLit Rechargeable Wheel Light - Disc-O Select (Single)

You need these for night riding. I have a bike and a trike, and I have one on every wheel to keep from being run over by cars that run stop signs because they don't see any cars coming. I don't care how many head or tail lights you have, if you are making a turn in an intersection, you are INVISIBLE to a car coming from the left or right. I look like a Christmas tree now, but the near misses are a thing of the past. I also wear a flashing strobe light on my helmet so I can shine it directly in the eyes of a menacing driver. It is so effective that if I raise my head up and aim it at a car with high beams on, they will dim their lights every time. I look at drivers at intersections to make sure I can exercise my right to be in traffic with them.