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After the train injury, such as the commuter train derailment in New York that occurred in December 2013 the past, there is an argument that attempts to apply the seat belt also train as automobiles and airplanes always. There is also opinion to counter this, the seat belt would not have been helpful to ensure the safety of the train for the physical characteristics train has. US FRA 2002 years , to see the effect of the seat belt through the collision experiments of the actual train, In UK RSSB 2007 year to check the effectiveness of the seat belt by using the human body model and trains the model of actual size and analyzed past major accidents. We discuss the application effect of the seat belt in the car through the analysis of case studies overseas.