Simulations of human escape on board, taking human factors into consideration, are carried out with parameters such as initial allocation of full members of passenger, person types, incident scenarios, and psychological variables. Effects of mass psychology on escape time are shown in 3-D graph. Based on these results, the method of escape analysis is proposed. First, preliminary analysis is to design general arrangement roughly modified by using the function of simulation program that shows bottlenecks of the routes. Second, escape simulations are carried out in necessary and sufficient conditions. The worst case and the best case are identified. The best case is the optimum one, of which the route should be that of the escape route design. The value of the best and worst case is regarded as the characteristics of design.