Introducing Human-Centered Design Approach in Transportation Planning Process: A Scenario Method and A Concept Model of Stakeholders

User-involvement and consensus building are thought to be a key process to achieve high satisfaction in planning and implementing social infrastructures and related services and plans. In products and information system development, an iterative Human-centered Design process starting from observing users behavior are applied, but not implemented in the areas above is known to provide effective results. The author has proposed a scenario-based method employ statements of speakers into conceptual planning process and introduced a case example of a mid-term plan. Another reason for HCD not to be implemented in infrastructures is infrastructure’s characteristics “external diseconomy,” and proposed a concept model that describes each infrastructure or plan and three stakeholders. With the model, it was well understood that certain pattern of relationship may prohibit implementing Human-cantered Design process while some patterns are similar to products and information systems; this implies that in certain infrastructure and services can take the benefit of Human-centered design process.