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Re:Show HN: Trains.fyi – a live map of passenger trains in t... by arlattimore on Monday November 27, 2023 @05:39PM (#38439487)
I expect one of the biggest factors is population density.

California has a land area of 165,000mi^2. Japan has a land area of 145,000mi^2.

California population is 39M. Japan population is 125M.

Re:Show HN: Trains.fyi – a live map of passenger trains in t... by mixmastamyk on Monday November 27, 2023 @06:49PM (#38440256)
Most of the people in CA are in the bottom left. No need for bullet train to Arcata. Though to Vegas would probably be profitable.