For what it’s worth (quite possibly “not a huge amount” but also quite certainly “not nothing”), the “annual TIGER roads overlay” (data) to work off of (to correct TIGER data, another — rather interesting and fruitful — thread at https://community.openstreetmap.org/t/tiger-data-quality) should be a very important suggested data component for “cleaning up existing TIGER data” (in the USA).
I’m not saying to “slavishly” tie one’s efforts of TIGER cleanup directly to “the latest” (updated TIGER overlay), as it is only one strategy among many for doing so. But it is or should be one very important consideration of part of a whole strategy one might take when approaching “TIGER cleanup” in any given area. Along with other strategies.
Minh seems to suggest that there are “areas outside the U.S. where mappers don’t have access to something like the annual TIGER roads overlay to work off of.” And, yes, this makes sense, because TIGER data are “US only.” So, there wouldn’t be TIGER roads outside of the USA to “clean up.” I would think that 100% of the places where there are “bad” (yet to clean-up TIGER data, or what is in some places called “unreviewed” or “less-reviewed” TIGER data), there are also annual TIGER roads overlay. I mean, 100%, and they’ll all be in the USA. Right? Am I missing / misunderstanding something here?