What about Boston? Red Line: 12,511/mi Orange Line: 18,822/mi Blue Line: 11,253/mipic.twitter.com/SzexqfJqUZ
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So, the Imazatosuji Line's rider density is currently 8,701 per mile--too low! If it had hit its target, it would be 16,216 per mile...
...so, with that in mind, I think we can make a good guess where the break-even point is for a generic subway line: roughly 15,000 per mile
A subway line with higher passenger density than this should (all else being equal) be able to operate at a profit. If it can't...?
...time to start auditing!
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