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In Sequoyah County, Oklahoma, USA, a bulk import of data from Tiger Map Service has resulted in tons of dirt paths labeled highway=residential, many roads and paths where none has ever actually existed, service roads FAR from where they were actually placed, and so on. I have fixed many, but I can’t possibly spare the time to fix all of them, and I only find them if I happen to be working in the same area. Is there a way that others (assuming anyone cares) can find them, and after fixing them, mark them so others don’t waste time looking at one that’s already fixed? And, when we fix one, should we remove the tiger tags? |
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The short answer is to remove the Ed's is the long answer, if you read that whole page, but it's worth reading. In particular note that TIGER data has continued to improve in some areas, and while it's not feasible to redo the import, it is possible to view the new TIGER roads as an overlay layer which can help with fixing up some of the old TIGER garbage. Some Edit - Incorporating Richard's good advice, I changed "geometry" to "geometry and properties". Primarily this means that in addition to the road's shape you should confirm or fix the value of the (Correctly tagging
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This answer is marked "community wiki".
I don't like how editor-software would automatically remove those tags either. This should be a default disabled option, or prompted for review before removing.
(06 Mar '20, 07:48)
Kovoschiz
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Some tiger: tags are by common agreement useless and should never have been imported. There's therefore an agreement that it's ok for editors to remove them silently.
(06 Mar '20, 09:15)
Richard ♦
Most of them also have “tiger:corrected=no” so I suppose I should also change that? And if other tiger things are WRONG, I think I should delete those (because correcting them implies that they are correct in Tiger). But what is the meaning of “tiger:separated=no”?
(06 Mar '20, 13:47)
Happy Hobo
What is the difference between removing “tiger:reviewed=no” and changing it to “yes”?
(06 Mar '20, 14:02)
Happy Hobo
The As far as I know there's no difference in meaning between removing
(06 Mar '20, 14:24)
jmapb
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This is the case all over the US. Generally, the issue is
(Apologies for nonsensical numbering, help.osm.org's Markdown parsing is beyond broken.) Thanks for the additional attributes. Please consider putting them in the Wiki if they are not already there. Sometimes my editor fails to offer suggestions, and I look in the Wiki without success.
(06 Mar '20, 13:49)
Happy Hobo
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There is a TIGER fixup page on the wiki which mentions the incorrect classification as one of the common issues. There is a link to some overpass queries to help identify area which may still need checking. |
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The “accept” mechanism is also broken. The full answer here unfortunately is a combination of several very useful answers. I tried to accept more than one, but that’s not allowed. I didn’t want to favor part of the answer over another part, but to un-accept took several tries. Many thanks to all who contributed. As bad as I’ve seen so far, I wonder whether I should recommend not using a data source proven to be as bad as this. 2
The TIGER import had/has enough problems that it has soured a large portion of OSM contributors toward all imports. The TIGER import happened prior to my involvement in OSM and I've cursed it multiple times but thinking back on the state of the map in the US prior to the import I suspect that overall it was a good thing. It at least gave a frame work for the whole country that could be improved upon. If we had the density of mappers that Europe has then it would have been a different story. One side effect: Having cleaned up a bunch of rural TIGER messes I can see where that same data was used by other maps (Google, Apple, Here, etc.) and can take pride in seeing that OSM volunteers have usually done a better job of cleaning it up in rural areas than some of the for profit mapping outfits. The built in map on my late model Toyota uses Here Maps data and it reminds me every time I glance at it when in the sticks how bad it still is.
(06 Mar '20, 17:26)
n76
I can still remember asking Mapquest for the route my parents should take to my house. Get off the highway, turn right, go under the highway, then jump the curb and drive into the pond! The road that used to be where the pond now is had been removed for decades (when the highway was built).
(09 Feb '23, 21:20)
Happy Hobo
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I have a similar problem in that a local editor has taken it himself to "clean up" OSM in my area by referencing Tiger.
In doing so, he deletes real roads, paths and other information presumably because it doesn't exist in Tiger!
@kevinp2 I'd suggest you politely communicate with this mapper using a public changeset comment on one of their "clean up" changesets, or by sending a private OSM message if you prefer. I'd emphasize that TIGER is a useful but not authoritative data source, and that many real-world roads and paths do not appear in TIGER.
As a last resort, you can report this mapper to OSM's Data Working Group by emailing data@openstreetmap.org or using the "Report this User" link on the mapper's profile page.