Tag 'was:operator = Berliner Verkehrsbetriebe'

• 21: was:frequency
• 21: was:operator
• 21: was:electrified
• 21: razed:railway
• 21: was:gauge
• 21: railway
• 21: voltage
• 14: end_date
• 3: construction_start
• 3: start_date
• 1: source