Tag 'ref = L4'

• 2: ref
• 1: railway:signal:combined:height
• 1: railway:signal:minor
• 1: surface
• 1: railway:signal:traversable:type
• 1: source
• 1: railway:signal:minor:form
• 1: railway:signal:combined:form
• 1: operator
• 1: railway:signal:combined
• 1: railway
• 1: railway:signal:traversable
• 1: aeroway
• 1: railway:signal:combined:deactivated
• 1: railway:signal:combined:states
• 1: railway:signal:direction
• 1: railway:signal:position