[OSM-newbies] Secondary vs tertiary roads

[Gregory Williams]

[Snip]

According to the wiki the UK settings for "highway" are as follows, 
trunk is the primary trunk route, primary is the remaining A roads, 
secondary is B roads, but what about a non-B road that more than just a 
residential road, as it goes somewhere, but has houses on it - should it

be residential, or unclassified, or tertiary (not mentioned in the
wiki)...?

[Snip]

When you need to mark the fact that that a primary / secondary /
tertiary road leads through a residential area you can add the attribute
abutters=residential. I only use highway=residential on roads which
would otherwise be highway=unclassified if they didn't have housing
there.