So far, I have been tagging Sois as service roads. With sois, I mean in this context the “real” sois, not the roads that have soi in their name and are otherwise like other streets, possibly even with multiple lanes.
I mean those sois that are so narrow that mainly only pedestrians and motorbikes are going through there; the only cars entering these sois, if it is at all possible, will be the cars of those who have their house there, effectively using it as a driveway to their garage.
Here an example of such a soi:
These sois are definitely not the typical residential road as they are somewhere between a footpath and a street. That should definitely reflect in the rendering as cars will normally not want to go into these streets. I used the service tag mainly because these sois are like alleys / driveways.
But I also tagged “larger” sois as service roads. These do not really fall into the category of alleys anymore (or well, that is the question here) but I felt the need to differ between a “main” residential road of a residential area (which is not an unclassified) and all the small dead-end-streets between the houses branching of that road.
Here is a fine example of this kind of setup:
Now, while reading the forum, I had the feeling that most agree that (those) sois should be tagged as residential generally. I’d like to put that to discussion.