I finally realized why I sometimes have to especially concentrate when I am approaching a stoplight. I sometimes see the stoplight at the street crossing ahead of me instead of the one in front of me. I just thought it was because I was always thinking ahead instead of being in the moment. Now I think it may have something to do with the fact that I don’t see distance and have to really focus to see which stoplight is the one closest to me. This is particularly difficult for night driving. Lack of depth perception can make life difficult!