Uploaded November 2025 | Updated September 2026, 1 hour ago
Same hole in the ground, wildly different bills. Japan (and peers) keep costs in the $250–360M/km range on recent Tokyo builds, while U.S. projects often land at $500M–$2B+/km. The difference isn’t magic labor—it’s stations, specs, utilities, and rules.
Inquiries: behindasian@gmail.com
Brought to you by the Behind Asian Team.
Same hole in the ground, wildly different bills. Japan (and peers) keep costs in the $250–360M/km range on recent Tokyo builds, while U.S. projects often land at $500M–$2B+/km. The difference isn’t magic labor—it’s stations, specs, utilities, and rules.
Inquiries: behindasian@gmail.com
Brought to you by the Behind Asian Team.










