I try to create an efficient route by using network analyst. The route passes through teens points. I still face a problem. Some points are passed through twice. There are some double backs where the same path is travelled twice. I need technical advice for this. I do appreciate feedback of this.
What options are you using on the route solver? Are you using "reorder stops to find optimal" The double back can happen when a stop may be on a dead end road or when the curb approach property is not set or other things like time windows. You can minimize this by setting the U-turns at Junctions property to only at dead ends.