Help fix up TIGER v1 ways

Old, untouched TIGER ways are still abundant in OSM 🙁 and fixing them up seems to be an endless task.

ugh!

I don’t know why I didn’t do this before, but I finally got around to making a MapRoulette challenge so we can fix them together:

>> Go to the challenge <<

Because the number of old TIGER ways is huge, this challenge covers only a tiny part of the U.S. as you can see here:

Once this part is done, we can reload the challenge with more old TIGER ways.

If you look at the screenshot above, you can also see what the query is that goes into Overpass to create the challenge in the first place. You can easily adapt it to make your own local challenge if you want to start fixing up old TIGER ways with your local mapping friends! (Why not organize a TIGER fixing party? OSM US will pay for pizza!)

If you’re interested in the Overpass details and some ideas for improving it, keep reading. Otherwise, just start fixing! 

Query Overpass for old TIGER

Here is my extremely simplified way to query Overpass for old TIGER ways:

way[highway]["tiger:tlid"](40, -113, 41, -111);
out body geom qt;

It takes the bounding box (40, -113, 41, -111) and searches for ways that have the highway tag as well as the tiger:tlid tag. This query should be a pretty good approximation of a real old TIGER way query, because the tiger:tlid tag is removed automatically when you edit such a way in iD or JOSM. So any way that still has this tag must not have been edited since the import.

This query falls short of a real old TIGER ways query, because the nodes that make up the way may very well have been edited. I am also not 100% sure under which circumstances the editors remove the tiger:tlid and other unnecessary TIGER import tags. It may be safer to look for last edited date or version number. If you have suggestions for improvement, please let me know in the comments.

Happy mapping!

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