From Wazeopedia
==System detected problem Types==
* Missing road - The roads are too far apart from each other and most likely a road is missing in between. In many cases the missing roads are identified in Parking Lots. Please see the guidelines regarding the mapping of Parking Lots.<a href="/wiki/index.php/Best_map_editing_practice#Parking_Lots" title="Map Editing (new Editor)">Parking Lot Guidelines</a>
* Restricted turn might be allowed - The route goes through a turn which is marked as not allowed.
* Driving direction mismatch - Part of the route is in the wrong driving direction.