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WalterBrighttoday at 6:02 PM1 replyview on HN

My obvious thought is why not dig deeper to build the subways?


Replies

al_borlandtoday at 9:23 PM

I’m not sure how deep the new one is, but some of them I went on already seemed extremely deep. I felt like I was on escalators for a long time, and multiple tiers, to the point I was Googling what the tallest escalators were when getting back to my hotel (Rome didn’t make the cut). There is definitely a cost to going deeper, in construction, ongoing maintenance, and the experience for the rider.