Tag 'source = extrapolate; survey'

• 21: source
• 12: amenity
• 10: ref
• 9: operator
• 9: railway
• 9: covered
• 9: railway:signal:position
• 9: description
• 9: railway:signal:direction
• 7: railway:signal:traversable:type
• 7: bicycle_parking
• 7: capacity
• 7: railway:signal:traversable
• 7: railway:signal:combined:states
• 7: railway:signal:combined:height
• 7: railway:signal:combined:form
• 7: railway:signal:combined
• 6: railway:signal:combined:substitute_signal
• 5: note
• 4: check_date
• 4: level
• 4: access
• 3: seats
• 3: fixme
• 3: backrest
• 3: railway:signal:combined:deactivated
• 2: payment:notes
• 2: operator:wikidata
• 2: railway:signal:minor:form
• 2: brand
• 2: surface
• 2: brand:wikipedia
• 2: railway:signal:departure:states
• 2: vending
• 2: check_date:capacity
• 2: name
• 2: payment:coins
• 2: short_name
• 2: railway:signal:departure
• 2: brand:wikidata
• 2: official_name
• 2: operator:wikipedia
• 2: railway:signal:minor
• 2: railway:signal:departure:form
• 1: railway:signal:speed_limit_distant:form
• 1: railway:signal:combined:shortened
• 1: railway:signal:speed_limit_distant
• 1: last_checked
• 1: railway:signal:main:states
• 1: railway:signal:main:deactivated
• 1: railway:signal:main:height
• 1: indoor
• 1: railway:signal:combined:function
• 1: payment:mastercard
• 1: railway:signal:speed_limit_distant:deactivated
• 1: railway:signal:main
• 1: payment:american_express
• 1: railway:signal:main:form
• 1: railway:signal:speed_limit_distant:speed
• 1: payment:visa
• 1: railway:signal:speed_limit_distant:height
• 1: railway:signal:minor:height