Road accident refers to the accident happens on road caused by vehicle mechanic failure, collision, man-made factors or other suddenness that results in human and property losses.
Railway accident refers to train accident caused by derailment, collision, explosion or fire, results in human and property losses.
Subway accident refers to the accident that happens to the subway train in operation due to mechanic failures, technical problems, man-made factors, force majeure, etc. Power failure is the most frequent cause of subway accident.
Water traffic accident refers to the accident that happens to ships or boats on the oceans, seas, and rivers.
Civil aviation accident refers to all incidents relating to civil aircrafts that threaten safety.