|Used to distinguish between different public transport relation schemes|
|Used on these elements|
|Status: In use|
|Tools for this tag|
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Similar pages for structural reference: Key:religion, Key:waterway.
This key is used by JOSM/Validator to distinguish between public transport route relations of old and new scheme for proper validation and usage of both schemes.
- public_transport:version=1 for old scheme
- public_transport:version=2 for new scheme according to public_transport=*
JOSM has the ability for adding the roles 'stop' and 'platform' of new members automatically, but only if public_transport:version=2 is set on the relation and one of the keys bus=*, tram=*, train=* etc. on the new member.
It seems this key is used only in JOSM.