6 Comments
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Ani's avatar

This is a really informative, super interesting piece. Thank you very much for your effort!

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S.Y. Lee's avatar

Thank you for reading!

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Long Branch Mike's avatar

Amazing how you seamlessly weave the historical and political events into the development of Seoul's Metro network.

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S.Y. Lee's avatar

Thank you as always, Mike! This is what makes rail history so interesting and a treat to write about!

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Hugh Colton's avatar

60 Hz is not the Worldwide standard. If anything it’s the exception.

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S.Y. Lee's avatar

Thank you. I amended the sentence. IIRC South Korea and Taiwan use 25 kV 60 Hz AC and get my phrasing wrong.

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