Tag 'operator:short = BVG;RVS'

• 6: network:short
• 6: public_transport
• 6: type
• 6: operator
• 6: operator:short
• 6: network
• 6: name
• 5: ref:VBB
• 2: website
• 2: ibnr_name
• 2: uic_ref
• 2: description
• 2: old_name
• 1: alt_name