I think there's some subjectivity, rather than a hard rule, whether driveway can be used when shared between two adjacent residences. There are plenty of examples in the forums and questions online where the OSM community supports using service/driveway in this scenario, especially for such a short driveway off the residential road. Deeper inspection of the actual property boundary, the currently mapped portion of the driveway is defined on a single lot (single residence). 

The original changeset intent was to ensure the segment did not appear as a publicly routable residential road. I'm still leaning towards this as service/driveway, but if you feel strongly it should be general service, I can change it - lmk. 

Also I appreciate the feedback and discussion as I'm learning best practices and conventions for mapping - thanks!