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by frosted-flakes
335 days ago
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Are there are metro systems that run trains 30 seconds apart? I think the fastest is around 90 seconds. Rarely used freight lines (aka branch lines) would never be automated, that wouldn't make sense. And some mainlines (I live near one) see as many as 4 100-car freight trains per hour. Those will never be less than one-man operation either, not least because at-grade crossings are everywhere. |
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