September 26, 2021 

Here is the list of OpenStreetMap metro/subways validation results:

https://cdn.organicmaps.app/subway/ (hourly) or https://maps.mail.ru/osm/tools/subways/latest/ or https://alexey-zakharenkov.github.io/subways/rapid/

You can help us by fixing red metro lines directly in OpenStreetMap. Then every @OrganicMaps user will have an updated Public Transport map (subways and S-Bahn at the moment).

Some general instructions are here:

https://wiki.openstreetmap.org/wiki/Metro%5FMapping

And here is info how to validate a separate city:

https://github.com/alexey-zakharenkov/subways/