Tag 'zone = 21'

• 102: amenity
• 102: zone
• 101: parking
• 101: orientation
• 101: access
• 101: fee:conditional
• 99: fee
• 95: markings
• 94: street:name
• 34: surface
• 12: sett:pattern
• 12: sett:shape
• 12: sett:length
• 10: capacity
• 1: restriction:conditional
• 1: vending