That is your decision
After you click the “closer road” button, you can chose the distance the closure starts.
The blocked part is shown on the map as a red line.
“Neuberechen” routes you to the next unvisited waypoint, which may be the original route.
It may guide you back to the point where you have left the route.
“Neuberechen” does not take into account, that some part of the route is blocked.
