Thank you for responding as that better explains the problem.

OSM is soley a data provider we can't completely control the algorithms that consume the data.  We can only do so much to prevent dangerous drivers but I did the following to encourage safer deliveries.

1. Moved the Address Node next to the service road to encourage routing algorithms to use it.  This is likely the main issue.
2. Tagged that section of the service road as permissive.
3. Added an access delivery tags to that section.
4. Added narrow tag to Cynwyd Road.