Naoto FUKUMURA Senior Researcher, Signalling and Transport Information Technology Division Ideally, railway crew planning rosters should draw as little as possible on available crew resources. Methods of crew route scheduling with the evaluation criterion of the total number of required days have been studied because we could not figure the number of required crews out exactly at the time of setting it up. However this method for compiling crew route schedules has made roster scheduling more

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... ficult. This paper therefore proposes a crew route scheduling method with the evaluation criterion of the estimated number of required crews and shows its effectivity for this problem.