vladaboitsik commented 4 years ago

Background

As part of on-going work to improve the quality of OpenStreetMap data, we recently used osmlint-osmium and osmlint for detecting issues related to road network data in Netherlands. In total, there were 2432 issues detected across 10 types of linters. Here ypu can find our page in OSM Wiki

Timeframe

We plan to start reviewing detected issues by the end of next week, and editing OpenStreetMap data to fix valid issues.

Tools

We will use existing OpenStreetMap editing tools, and using the #hashtag mbx_netherlands_roads

Editor: iD or JOSM Satellite Imagery: Bing, Maxar, Esri Street Level Imagery: Mapillary, Other open sources if available

Contact Person

We welcome feedback, suggestions, and insights from local mappers. If you have questions about this work, or a specific edit by our team, please reach out to Natalia at Natallia (natallia.zhouner@mapbox.com) or post a comment in a changeset.

Linter Output

Issue	Netherlands Total	Data
Crossing Highways	370	crossinghighways.geojson.zip
Missing Role	54	tr-missingroletr.geojson.zip
Impossible Angle	45	impossibleangle.geojson.zip
Impossible Oneways	356	impossibleoneways.geojson.zip
Island Highways	206	islandshighways.geojson.zip
Mixed Layer	21	mixedlayer.geojson.zip
Missing Type Restriction	14	tr-missingtyperestrictiontr.geojson.zip
Excessive Roles	12	tr-excessiverolestr.geojson.zip
Invalid Roles	15	tr-invalidroletr.geojson.zip
Crossing Highways Buildings	1339	crossinghighwaysbuildings.geojson.zip

Examples

Impossible angle or what we usually call “dragged node”. Link to example you can find here

Also found unconnected roads. To be routable, they should be connected into the road network. You can find example here

And here

@legain @Andygol @abrohood @shvrm

SanderH commented 4 years ago

For Crossing Highways Buildings you may want to exclude situations where the crossing highway and building already have a different layer.

jdhoek commented 4 years ago

False Positives: Impossible Oneways

Terminating on valid entrances

Way 755626484, and similar:

When a oneway way terminates on a node with entrance tagging, then it is not an impossible oneway. In this case the node is a parking garage entrance (amenity=parking_entrance). This is valid.

Another one: this one terminates on entrance=yes, which is fine if the inside path is not known or simply not drawn.

jdhoek commented 4 years ago

Crossing Highways Buildings

This geojson looks incomplete. It is possible the rest of the country doesn't have any warnings, but statistically unlikely.

incomplete-crossing

jdhoek commented 4 years ago

False positives: Island Highways

If a way has access=no|private like here, then ignore it.

This one is connected though: to an aeroway=taxiway. Good enough for the local air force.

Weird though. Your linter is not picking up this one. Also valid and an island.

Isolated bridges may mean that the ways leading up to them are unknown, or are not mappable. This is common with agricultural tracks crossing streams. For boats and other water-based transport classes these bridges are useful to know of, even though they are not connected to the grid. You are correctly ignoring this one, but trigger on this one. Is the highway class used as well?

jdhoek commented 4 years ago

Invalid Roles

All positives. I think I fixed them all.

IIVQ commented 4 years ago

I looked at a few crossing ways (but did not fix them yet)

_fromWay=6580066 _toWay=847219233: Footpath that is in reality in an underpass. However, is has no tunnel=yes nor layer=-1 on it.
_fromWay=844520775_toWay=6578188: service road and footway cross in node 7237680991 - I don't see what's wrong here
_fromWay=849596141_toWay=849596138: path and track cross without node. Node should be added
_fromWay=9384097 _toWay=439934173: Overpass does have bridge=yes but no layer=1.
_fromWay=115092546 _toWay=368047826: Dragged node near here. (Funnily, I walked here today)
_fromWay=386499111 _toWay=32571464: Tunnel but without layer=-1 on this footway
_fromWay=7375104 _toWay=518815429 Dragged node
_fromWay=841744724 _toWay=730040112 & _toWay=776264047 Just no connecting nodes -_fromWay=59741855 & _fromWay=81782103 _toWay=757690385 upper way (twice) has no bridge=viaduct nor layer=1
_fromWay=106357515 _toWay=60465269 & _toWay=7392129 overpass footway has bridge=yes but no layer=1

Just to name a few. Is this helpful?