Transitional Spaces: Between Indoor and Outdoor Spaces

Traditionally, spaces have been classified as being located either indoors or outdoors. On closer inspection, however, this distinction is not as clear cut as usually assumed. For example, when navigating complex urban landscapes, pedestrians frequently traverse tunnels, enclosed footbridges or partially roofed courtyards. In this paper, we investigate this type of spaces between indoor and outdoor areas. We present an initial definition of transitional spaces based on a conceptual analysis, and then report on results from an empirical study with 103 pedestrians, whom we interviewed in an urban area. A statistical and linguistic analysis of the outcomes of the study provides evidence for the existence of transitional spaces and their use. The outcomes also support an initial set of characteristics and properties that further clarify these areas. The results pave the way for the further investigation of transitional spaces, e.g. in terms of providing effective navigation support through them.