Abstract
This paper describes how, in order to improve railway diagrams, it is necessary to grasp the flow of railway passengers in detail. However, it is impossible to accomplish this goal only by counting the number of on-board passengers. The paper has developed a method to estimate the passenger flow based on OD (Origin & Destination) matrix data collected from ticket gates in hundreds of stations and timetables of thousands of trains. By analyzing the estimated results, it is possible to obtain the histograms of the number of passengers aboard each train for each destination, the number of passengers boarding and disembarking at each station, the number of transfer passengers at each station and other relevant factors. The paper also developed a proto-type system based on this method assuming that all passengers choose shorter time paths. The estimated number of on-board passengers with this prototype system has a strong correlation with the number reported by train conductors.
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