The article refers on a case study developed within the LABAC Project - founded by Province of Trieste 2012-2016. The main question is to explore the gap between accessibility subjectively measured
(perceived accessibility) and objectively measured (accessibility for law), and the isue on accessibility assessment developed by users not always equated with quantitative measures. The
developed work aims to give a contribution to the knowledge gaps between real accessibility and accessibility for law, examining the accessibility concept from this perspective. The given experience demonstrates that the human process of evaluating accessibility is the key to better understand the different dimensions of accessibility, its variables and its relationship to open space use behaviour.
