> To be specific, BEFORE there's an earthquake. Yes, it takes a little while for seismic waves to travel from the epicentre to locations a fair distance away.

> To be specific, BEFORE there's an earthquake. Yes, it takes a little while for seismic waves to travel from the epicentre to locations a fair distance away. The high speed trains are programmed to start braking as soon as an alert is heard - it's usually enough to shed 100mph or so off the speed before getting in trouble.