Also added some natural=tree.

This only affected Missouri.

Changeset #102703929 stripped this name from MO W for some reason. It's totally fine for a route to be given both a road name and a state letter designation.

I noticed this in the history of one of the ways for MO W (IIRC it was a name_1 key).

I verified the concurrency in the process.

^ Correction: the J-turn intersection is between Route B, Route P, and U.S. Route 63.

The way I implemented the J-turn is to add link roads (separated by islands, so these link roads are justified) to the route relations.

Also added the J-turn intersection between Route A, Route P, and U.S. Route 63.

This also fixes the concurrency between Route A and Route B which ignored A entirely.

Regarding the concurrency, it does not span the two counties. It is entirely within Harrison County, but Route M is a long east-west route that spans the two.

Also fixed a TIGER error on nearby YY.

I verified all north/south roles in the relation.

This looks like an editing mistake where someone forgot to deselect a node when merging? Hard to say

The one number I corrected was on way #18627830. It had "name_2" tag claiming it was a continuation of PCR 616. I verified on Bing StreetSide (which remarkably has coverage here) that it's actually PCR 622.

Notice: The accuracy of these expanded names is 100% dependent on the accuracy of the original Pcr-initialism names. I did not reference any sources beyond imagery (to correct one incorrect road, which I'll mention next) to verify numbering.

I chose to use the "PCR X" form as the ref value for the ways. I think CR is more common nationwide, but PCR is more locally-appropriate. This is easy enough to change in the future. Similarly, I believe this is only an incremental improvement.

I should note that I couldn't determine whether PCR expands to "Perry County Road" or "Perry County Route", but picking one was a better thing than leaving abbreviations in the database.

Most of these roads had names of the format "Pcr X" where X is an integer. The "cr" letters were lowercase. These were carried over from the TIGER import.

This only affected U.S. Route 61 in Missouri.

Please let me know if this changed something wrongly. I am very confident it was only an improvement, as there were many gaps and a mix of forward/backward and north/south roles (I changed everything over to the latter).