Thanks for the comments. One thing I hope to help with in the future is new housing developments. My (mid-sized) city has at least 10 ongoing large subdivisions, parts of which haven’t been added to the map yet. I cycled one a couple of weeks ago, and half its roads weren’t on OSM or Google maps yet.

But I don’t want to add the new roads incorrectly, so I’ll wait until I’m certain I know the coordinates before adding something. In the meantime, I’ll correct small details like non-existent roads, private/public designations, paved/unpaved, etc.