Also, it's nice to know that the person is in fact meaning to turn, rather than just being in the wrong lane. When dozens of 3,000 lb death boxes are travellin

Also, it's nice to know that the person is in fact meaning to turn, rather than just being in the wrong lane. When dozens of 3,000 lb death boxes are travelling at high speeds in close proximity to each other, and in close proximity to slow moving, talking creatures made out of meat, it's best to communicate as clearly and possible.