ABSTRACT
This chapter proposes a fit for purpose framework which brings together accessibility, usability and the user context. The evaluation applied a three-part methodology to take account of accessibility guidance, usability issues, and the travel planning task. The W3C Web Content Accessibility Guidelines focus on whether the content is accessible to a person with a disability. These guidelines offer 14 principles of accessibility of web-content design, describing both the problems and possible design solutions. Automated checking tools are available through the internet and simplify the accessibility assessment; however some manual checks are also essential. The usability heuristics identify common classes of user interaction problems that are likely to lead to confusion, errors or task failure. Usability issues have the potential to affect all users and are of particular importance to new users and those with limited skills or insufficient experience to overcome errors.
