Total track length304,000 m
202,667Blue whale hearts
1,583Gateway Arch heights
Photo from Wikimedia Commons
Tokyo Metro System
The world's busiest subway system, moving 8.7 million riders daily/Infrastructure
The Tokyo Metro system (combining Tokyo Metro and Toei Subway) consists of 13 lines with 286 stations spanning 304 kilometers of track beneath one of the world's most densely populated cities. On an average weekday, it carries roughly 8.7 million passengers, making it one of the busiest rapid transit systems on Earth. Trains during rush hour run at intervals of just 2 minutes. Professional 'pushers' (oshiya) are stationed at busy platforms to help squeeze passengers into packed cars. The first line opened in 1927 between Asakusa and Ueno.
Measurements
Longest line (Oedo)40,700 m
12,333African elephant heights
22,611Bookcase heights
Average station spacing1,063 m
3.5 millionGrains of salt
1,312Skateboard lengths
193Giraffes
Deepest station depth (Roppongi)42.3 m
3,525USB plug widths
423Pine cone lengths
Age3.1 billion s
8.8 millionBohemian Rhapsodies
34.7 millionRed lights
3.1 trillionCamera shutters
First line opened 1927
Minimum headway (rush hour)120 s
40Goldfish memories
127 billionthsGenerations