Train bombings refer to terrorist attacks that involve explosives being detonated on trains or at train stations. These attacks aim to cause mass casualties, instill fear, and disrupt transportation systems. They can target passengers, railway infrastructure, or both, and often occur in crowded areas to maximize impact. Such incidents have occurred in various countries, with notable examples including the Madrid train bombings in 2004 and the Mumbai train bombings in 2006. Authorities typically respond with increased security measures and investigations to prevent future attacks and ensure public safety.