Japan’s high-speed rail network uses a series of highly sensitive seismic sensors to detect earthquakes. On March 11, 2011, a sensor picked up a magnitude 8.9 earthquake 12 seconds before its impact, triggering emergency stop signals for 33 trains, just one bullet train derailed.

[u/usefsaeed]

https://www.railway-technology.com/features/feature122751/

[u/Drewzilla22_YT]

That’s a lot of time moving at that speed, geez