In that sense, universal accessibility is an integral part of Universal Design. Inclusive environments and accessible design benefit everyone.
Exclusionary environments are handicapping.
Barriers are part of any built environment and may be placed for safety, security and guidance functions. Barriers with a legitimate purpose may at the same time be handicapping to a user with a disability. Non-handicapping environments need to be assessed in the light of their equipment, services and management, which will allow them to be usable by all. Creation of user-friendly environments requires an understanding of the relationship between the accessibility features of a building and the abilities and limitations of its users. Universal accessibility and barrier-free environments require strategic approaches, holistic plans and full and effective involvement of all parties concerned.