Rail accidents are significant man-made disasters that result from a complex interaction of human error, technical failure, environmental conditions, and systemic weaknesses in railway management. As rail transport is one of the most widely used and economically important modes of transportation, especially in densely populated countries, accidents not only lead to loss of life and property but also disrupt social and economic systems. Understanding the causes and impacts of rail accidents is essential for disaster risk reduction, improved safety planning, and effective emergency response. One of the primary causes of rail accidents is human error. This includes mistakes made by train drivers, signal operators, maintenance staff, and other railway personnel. Driver fatigue, negligence, lack of training, misinterpretation of signals, and failure to follow standard operating procedures can result in collisions or derailments. Signal passed at danger (SPAD) incidents, where a train crosses a red signal, are a common example of human failure leading to accidents. In some cases, communication gaps between control rooms and train operators further aggravate the situation. Technical and mechanical failures are another major cause. Railway systems rely heavily on the proper functioning of tracks, signaling systems, locomotives, braking mechanisms, and communication equipment. Poor maintenance, outdated infrastructure, worn-out tracks, and defective components can cause derailments or mechanical breakdowns. In many developing regions, railway infrastructure suffers from underinvestment, leading to aging bridges, weak tracks, and obsolete signaling technology. Faulty track alignment, rail fractures, and malfunctioning automatic signaling systems significantly increase accident risks. Infrastructure-related deficiencies also contribute to rail accidents. Overcrowded rail networks, inadequate track capacity, and poorly designed level crossings are common problems. Level crossings without proper gates, warning systems, or supervision often lead to collisions between trains and road vehicles. Encroachments on railway land, unauthorized crossings, and settlements near tracks create additional hazards. Inadequate fencing allows animals or pedestrians to stray onto tracks, leading to fatal incidents. Sabotage and terrorism represent intentional causes of rail accidents. In certain regions, trains have been targeted through bomb blasts, track tampering, or deliberate obstruction. Such acts not only cause immediate casualties but also create fear and instability. Theft of railway components, such as signaling cables or track fittings, can also weaken infrastructure and lead to accidents. Vandalism and criminal activities pose serious threats to railway safety. Environmental and climatic factors, though natural in origin, often contribute to rail accidents in the context of man-made vulnerability. Heavy rainfall can wash away tracks or weaken embankments, while landslides in hilly areas can obstruct rail lines. Extreme heat may cause track expansion and misalignment, increasing the risk of derailment. However, the severity of such impacts