I guess you've already found the answer, but anyway: The expand is there to add x number of waypoints to a route. This helps the navigator that you have to use exactly the route you planned on the computer.
Posts made by Baard Hermansen
Suggestion: Avoid parts of winding route, based on length
When creating winding routes, the route planner adds inn very unnecessary short stubs of roads. Take a look at the example below, where a tiny detour has been created. It takes a long time going over the route, manually moving the route to avoid these.
It would be very useful if detours below a certain length could be avoided or deemed not valid. Either automatically or even better, by a configurable amount.
Suggestion: Avoid winding road on part(s) of route
As far as i can tell, today you can set a route to be a winding route, but that is then applied to the whole route. It would be very helpful to be able to designate portions of the route to be "normal".