Accessibility and Usability Standards on Built Environment Design: Struggle Toward Agreement in the Global Context

Differences in accessibility requirements on the built environment have existed between countries for years. Proposal of their international standardization started in 2001 within ISO, which resulted in publishing the first version in 2011. However, some of the issues were left undone due to time limit. After five years of their use, working group discussion on the revision started for improvement, with several changes and additions proposed to be introduced. How far are we successful in attaining the goal during the revision stage? This paper will discuss the challenges and opportunities we have been faced with.