Tag 'ref = M2'

• 6: ref
• 5: network:short
• 5: network:wikipedia
• 5: type
• 5: operator
• 5: operator:short
• 5: network
• 5: colour
• 5: name
• 5: network:wikidata
• 5: wikidata
• 4: route
• 4: public_transport:version
• 4: from
• 4: to
• 2: headway
• 2: interval
• 1: surface
• 1: source
• 1: route_master
• 1: name:fr
• 1: aeroway