In many Japanese railroad companies, human error management has been executed and various results were obtained. However, when workers’ comprehension on the safety management is poor, the effects of the strategies to prevent human error become very low. Therefore, based upon the concept of PDCA management cycle, we aimed to propose strategies that can enhance the workers’ motivation/satisfaction on safety management, and to activate the human error management in an operation center of a city transportation bureau. As a result of having executed proposed strategies since 2010, we confirmed that the workers’ comprehension level and motivation about safety management activities were improved.

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This paper focuses on the work information of a product with many manual assemblies, such as an office machine, and devises an analysis model for process of memorizing the work information, using a touch-panel task where work positions and order are memorized. The model is based on a classification of memorizing pathway, combining results (memorizing or remembering the information) and utterance data. Experiments are conducted on a subject who has got used to the learning and another subject who has not got used to. Analyzing the results, the model can show the difference of memorizing process between the two subjects. And the effectiveness of the model is confirmed.

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[in Japanese]

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This article is a study of practical application on our previous paper entitled “Organizational Factor Analysis for Human Error.” We have obtained a simplified method, through uniting two evaluation lists, called “Situation of concerned team” and “Relational team characteristics,” into one list, and excluding and/or arranging conceptual redundancy among the evaluation items. In addition, we eliminated items which are distinguished as non･applicable based on four case-studies. For an inspection of the methodological validity, some cases were applied by ourselves and other disinterested parties, substantially similar results were obtained, except for various descriptions.

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