True. there are 3 things mashed into that paragraph, not just 2.
* Parking Lot Roads can be used to avoid "missing road" automated Map Problem reports.
* Parking Lot Roads can be used to prevent Waze from assuming drivers driving slowly or parked in the parking lot are in a traffic jam in the main road -- draw in the drivable portions fo the parking lot that are near outside roadways.
* Waze will not highlight slow speeds (automatically detected traffic jams) on parking lot roads