Tokyo Last Train Map: Visualizing "When You Can't Get Home" with Open Data from 17 Rail Operators

広島で行われたFOSS4G Hiroshima 2026での「東京終電マップ」に関する発表スライドです。

Transcript

1. Tokyo Last Train Map Visualizing how late you can still get home 2026.9.2 FOSS4G Hiroshima / Hajime Kato (MIERUNE Inc.)
2. Tokyo, 23:00
3. Tokyo, 01:00 • No trains leave the center • Almost no night buses • First train at 5 AM
4. You can search A to B. But you can't see the whole picture. A B
5. Distance = time, not space B A • Center: the loop line in central Tokyo, at 23:00 • Spokes: the direction you travel • Rings: the clock
6. DEMO Movie
7. DEMO Movie
8. A tool, and a piece of art A tool: so you don't miss the last train. An artwork: fireworks going out over a giant city.
9. How it's made • Open transit data, plus the rest collected by hand • No geography: just SVG and JavaScript. • Updated manually: automation is next
10. 8 years later • 2018: a static image • 2026: finally interactive • Built with AI as a coding partner static image in 2018
11. Thank you! Tokyo Last Train Map Portfolio