this post was submitted on 28 Sep 2023
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GenZedong
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Im not an expert but why do they want to build it 70% underground? Isnt that way more expensive?
Isn't that way more expensive?
I think you answered your question there
The northeast corridor is densely populated and fast trains require very straight tracks. In a place like China, eminent domain is easier and the State can expropriate land for the construction of a straight track, but in the US this is harder due to higher costs (lower economies of scale) and endless bureaucracy for infrastructure projects. So I suppose they just found it easier and a better option to build a lot underground.
I wonder if it has something to do with surface exposure to magnetic fields. A very strong magnetic field, enough to levitate a train, zipping by you at the speed of said train, while not harmful to human biology unlike a lot of fear mongerers claim, can interfere with radio antennas and the navigation systems on ships and aircraft. The inside of the train is heavily shielded but I imagine it's pretty much impossible to prevent it from escaping into the outside without containing the entire track in shielding.