Hi Cory, mnovotny and deltafox,
Since we currently do not have a separate road category for private driveways, these should be mapped under the road category 'Terminal'.
@deltafox, we are still mapping terminal roads under the category 'Terminal' and not 'Local'.
Here's the definition of a Terminal road(from Map Maker's Help center):
Terminal road: A terminal road is typically an access road to a point of interest. It is often used for very small roads inside a neighborhood or the roads inside shopping centers and public promenades. Driving directions will route you onto a terminal road if your starting point or destination is located on it or another adjoining terminal road.
Thanks,
Raza