- Ensure connectivity, direction and numeration of the roads.
- We must use the exact format. We must make sure that the road number is correct.
- GIS files and aerial photos, among other things, will be useful to do so.
- Be careful when you delete a segment. Even if this does not exist in the GIS files, reality says that it can exist and be a new road. If you have any doubts, please contact your group leader. Only delete a segment when you're absolutely sure that it does not exist.
- If there is a bridge on a road, add it. See chapter "elevation" of this wiki.
- Add the PLR (Parking Lot Roads) of the shopping malls and drive-thru.
- Add U-turns where needed.
This is not an exhaustive list ! If you see a further problem, fix it !