[DE / Expert] The new Metronom TRAXX AC3 has four pantographs and we know why [updated]

Did you notice? The first TRAXX P160 AC3 for LNVG > Metronom, released from work earlier this month, had four pantographs. But why? For services in the German Niedersachsen, where this machine will be used, two 15kV AC-standard-pantographs are just fine. LNVG wants to go abroad? Extra redundancy? No, there is a different rationale, let us explain:

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