Key 'usage'

External: tag info

• 6287: main
• 1004: industrial
• 294: branch
• 70: tourism
• 25: distribution
• 18: freight
• 10: transmission
• 7: penstock
• 7: test
• 4: siding
• 3: facility
• 3: transportation
• 2: gas_distributor
• 2: yard
• 1: academic
• 1: history
• 1: irrigation
• 1: playground