A mobile battery caught fire aboard a Shinkansen, compelling authorities to swiftly extinguish the flames and ensure passenger safety. The incident occurred without warning creating brief panic, but was controlled in time without any reported injuries. Investigations are underway to determine the cause of the incident and review safety protocols if necessary.

In Japan, Shinkansen or bullet trains are a popular mode of transport. They're prized not just for their speed and efficiency but also for their safety record. Incidents like this are rare and are taken very seriously. Japan's rigorous approach to safety and quality assurance leads to swift action and thorough investigations in such scenarios.

In the US or EU, reactions to such incidents would be quite similar. Safety protocols on public transportation are also rigorous to prioritise passenger safety. Investigation and, if necessary, recall of potentially hazardous products are common responses.