Permeable interior: Unfolding threshold space within transit corridor

At a transit corridor, threshold plays a key role in creating connectivity between the interior of transit facilities and its immediate urban context. The threshold is a choreographer of spatial experience and might potentially generate various public activities. As a transitional space, the permeability of threshold space's boundary becomes an important factor for the users' spatial experience and in providing a sense of safety and direction for the pedestrian. Such penetrable properties also help the users predict what is going on in and around the space. This paper suggests that threshold space can be read as an interior space. Therefore, the author uses interior theories as a groundwork for the case study. This paper aims to reveal how permeability in threshold space within transit corridor might have an impact on its atmosphere and the people's experience within. It also argues that permeable threshold can have a significant impact on users' perception of the transitional space. The method used on this paper is a qualitative method, including literature review, case study, and field observation. The findings may be useful in planning threshold space in the future to create a better and safer transit experience.