Tag 'ref = M4'

• 9: ref
• 6: operator
• 5: network:wikipedia
• 5: type
• 5: operator:short
• 5: network
• 5: network:short
• 5: colour
• 5: name
• 5: network:wikidata
• 5: wikidata
• 4: interval:midday
• 4: from
• 4: route
• 4: public_transport:version
• 4: to
• 3: surface
• 3: interval
• 2: source
• 2: aeroway
• 1: parking
• 1: private
• 1: access
• 1: amenity
• 1: railway:signal:minor:form
• 1: railway
• 1: railway:signal:combined:states
• 1: railway:signal:direction
• 1: railway:signal:combined:height
• 1: operator:type
• 1: railway:signal:minor
• 1: railway:signal:combined:form
• 1: interval_1
• 1: route_master
• 1: covered
• 1: railway:signal:combined
• 1: name:fr
• 1: railway:signal:combined:deactivated
• 1: railway:signal:combined:function
• 1: railway:signal:position