This node is seriously in the wrong place. Was the restaurant really on the corner of Washington and Washington Court in May of 2018?

I have moved it to the actual location based on on-the-ground survey.

What "city map"? What is the copyright status/license of it? How can I look at it?

According to the MassDOT data set as shown in MassMapper, Meadow Pond is a public road, with a 35' right of way. It may be that the marking is improper, which would not change access. I'll see about contacting Concord, after finishing up with Acton :-)

L3 parcels shows Anthem Way and the other 3 as a public right of way. I intend to inquire of the town; it seems that either L3 parcels is wrong or the signs are improper.

Can you link to "Meadow Pond"? I can't find it. I will check the signage on Anthem Way next time I go by.

OSM has a confused doctrine, visible on the ground out of one side of its mouth, and a strong focus on the English "public rights of way" out of the other. In the US (at least in MA), public rights of way are verifiable at the registry of deeds. So I think access tags should follow what the actual legal situation is. OSM also has a tradition of tagging signs, representing exactly what the sign said, whether or not what is on it is true, and whether the person who put it up is acting properly or not.

The case of Anthem Way is curious, and I'll follow up with the Acton Planning board. It could be that L3 is wrong here, and it's easy enough to request the subdivision plan, special permit, or comprehensive permit as those are all public records.

In this case, the Ridgewood and Westview in Stow are shown as carved out from the condo property.

Thanks for working on this. I had a note to fix Regency, and am glad you did. To figure out if a road is a "real road", which in MA means either a "public way" or a "private way" (easement for the public to pass, but is not necessarily maintained by the government) or something "not a road" such as a driveway, the best resource is "L3 Parcels" or "Tax Parcels" which shows legal roads as carved out spaces.

It looks like you moved a bunch of nodes when you added the wikidata tag. Is that what you think happened, and If so I wonder why?

I just noticed this (adding the cell antenna), and "residential" seemed wrong, as L3 Parcels show it not as a legal street. So I have changed it to service. The change to residential was long ago, in a huge changeset, with a gibberish comment, referencing Bing -- which makes no sense.

Can you explain the name? Is there a road name? Is this way used for anything other than water/cell-tower access?

Is there a gate? Surely this is locked and access private but that's "surely" not seeing it on the ground.