• biddy
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    1 year ago

    The interstate standard max grade is 6% and that’s only used when there’s no other option over mountains. The limit for standard passenger trains seems yo be 4-5%. So it’s not that different, the vast majority of the interstate corridor could support passenger trains. Not freight trains through, those need a much gentler grade.

    The US has essentially built a railway network with the interstates, it’s just paved over and less efficient.