the general aim of these operational guidelines is to facilitate the incorporation of accessibility - with universal design principles - into the preparation phase of urban development, building and public transportation projects. the guidelines seek to provide conceptual and technical information for professionals who are responsible for new initiatives. the ultimate aim is to facilitate the analysis and design of projects, which focus on access to services and environments - and interaction with the same - for a greater number of people, independently of their physical or sensory characteristics. this manual serves as an orientation document, offering a general view of issues related to the implementation of accessibility. the principles, parameters and technical recommendations listed in this document are based on the regional technical standards of copant (pan-american commission on technical standards) and these must take precedence where no local, more stringent accessibil...