The first application that comes to mind is vehicles. Picture a car driving at full speed, or an airplane about to land. With a 10 second early warning, at the very least the driver/pilot could receive a clear visual and audible alert instructing it to slow down / abort approach, brace for impact, alert passengers, etc.
Also: operators of heavy or dangerous machinery, surgeons, construction workers...
"According to Higashi, only one train, running under test without passengers, derailed that day, when it was approaching Sendai, before it was immediately halted by the emergency braking."
Also: operators of heavy or dangerous machinery, surgeons, construction workers...