The most important reason why we “don’t like using other’s data for OSM” is, it could be copyrighted! We are basically a giant international hobbyproject, which apart from, some donations now and then, doesn’t make any money. This is one reason why we want to (legally) stay “whiter than white”. We just don’t want to risk anyone sending their lawyers after us.

Also before you even consider an import, make sure you read and understand https://wiki.openstreetmap.org/wiki/Import

Well… You are welcome to map them then :-)

Note that the “or” between highway=residential & highway=tertiary appears to have caused the formatting of my previous comment

@Glassman The OSMI warnings are in fact useful (which is why I check them). Removing them is not a real option

@Horza Those sidewalks. You’re not familiar with Overpass queries?

One really annoying issue with all these driveways in some areas is that many of them end close enough to each other to get flagged on OSMI etc. I’ve tried explaining the problem to some of the creators, but unfortunately they don’t appear to get it and so it’s purely up to regular OSMI users like myself to put noexit tags at the last node of every damn one of all these driveways created by other people :-(

In my country I’m seeing a few entusiastic hobbyists adding very short driveways, while I personally would only ever add longer driveways. My stance is that very short driveways doesn’t really have much practical value. But I guess this is one of those issues that are up to personal judgement.

I’d say yes. See the response to https://help.openstreetmap.org/questions/62884/inventing-names-for-essentially-unnamed-private-airstrips

Pretty much all contributors make changes to data without notifying previous editors. In fact I don’t think I’ve ever (in ~9 years) seen anyone advise previous editors before making changes and I don’t really think there’s anything we can do about that. The way you “protect your contributions” in OSM is by using tools such as OSMcha or WhoDidIt to detect activity in the areas you care most about. Both of the above tools can produce rss feeds, which within a few minutes can notify you of any changes in those areas.

I’m responsible for one of those changesets :-). I didn’t touch the bridge itself, because I noticed from it’s history that enough people had done that already and I didn’t feel like adding to the (minor) chaos,. I just fixed some minor technical issues near it, because, well, I like to check on how well areas are mapped. Rather than outright delete objects still visible in current imagery, i also like to use lifecycle prefixes to notify other mappers that objects that for some reason doesnt physically exist anymore, wasn’t just “not-yet-mapped” or “mistakenly-deleted”. The Ponte Morandi I would tag collapsed:bridge=yes and leave it like that for as long as necessary (possibly years).

Make sure to compare with any gps tracks found in the area to determine which imagery might be better aligned. Not to say that gps tracks are necessarily perfect, but, especially if there are several, they may nevertheless give valuable hints.

Yes, before doing anything you really should make sure that the satellite image you’re looking at really is all that well aligned. We’re constantly seeing newbies looking at different satellite images, which in some areas can be off by up to 100 m, move buildings, roads etc around and away from their actual positions. Before “adjusting” buildings etc, please make sure that the images line up fairly well with gps traces in the area.

I agree that this is designed to thoroughly drive mad unsuspecting users.

rorym. what tool did you use to create that gif?

At https://overpass-turbo.eu/s/wiN building:part tags has been used to map and name parts of buildings. Here the names also doesn’t render on the default view though.

I tend to be too busy mapping to really care about my stats :-)

I love your conclusions. I didn’t see the thread you mention, but in other areas I have observed exactly the same :-)

Jason. Which “official applications” do you refer to?

It’s been more than 2 weeks since the last edit on this account: http://www.openstreetmap.org/user/Meg_W/history , so no need to worry :-)

GraphHopper and other navigators needs to first download a copy of the OSM database and then process the data into special formats suitable for their purpose. This process can be quite computing intensive and that’s why you should expect navigators to take at least a day (some much longer) to pick up changes to the OSM database.