I have the following comments:
general comment: there's some minor descrepencies between OSM and your routes, where you have got more accurate data than OSM - that's fine, though unnecessary and potentially your source could be really irksome about it.
OK, when is it appropriate to override an official (DOT) source? I only did so when GMSV clearly showed a street sign with a different name which, I admit, I checked only when I found discrepancies (KYTC vs local county GIS).
I was thinking more about where the point isn't on the road as-marked-on-OSM, but is on the road if you switch to Google's data. I'm not thinking about street names, but actual mapping data that Google might get annoying about. If it comes from state or county sources, then good, we won't have a problem. We shouldn't have a problem with the Goog, but we could have one, so avoid doing it unless OSM is really bad.
KY3716: I'm guessing KY16 has been moved onto an upgraded old route now that has also meant that the cut offs at the N and S ends of this route have gone?
KY3716 is the former route of KY16.
Sorry, my question is about the cut offs along the route. They are marked on OSM and Google, but you treat them as non-existent.
Thanks for bringing up shaping points. It's not clear from the directives when to use them (or waypoints in general) beyond the minimum. I use the CHM waypoint editor, and make sure every part of the route falls between the red lines. Beyond that, I'll drop a waypoint in at every intersection with a signed route or other roads that lead to a destination (nearby interstate exit, major tourist attraction, etc). I've read several threads here of the "cleanup" variety that indicate other collaborators stripping excessive waypoints and shaping points from routes, and with that in mind I've sought to avoid cluttering my drafts with anything but the bare minimum. I've chosen one shaping point over two waypoints when one shaping point is enough to properly shape the route and the two waypoints would have been at intersections with roads that seemed unimportant. If I've misinterpreted the guidelines, please elaborate.
You've not misinterpreted, but your minimalist routes aren't great. The excessive shaping was having the roadway within the blue line, rather than the red lines. I prefer more the minimalist approach to the overzealous ones, but I do personally like having the rough shape of the route, so two points is better than one if the road zigzags. Most of the shaping questions are up to you (I put question marks on those), though there's cases where you have been over-minimalist in points in general - KY3677 is an all or nothing thing, but wouldn't be driven as such (especially as the last bit is a cul-de-sac off the main road).
