The study presents an innovative approach to improving how people navigate cities, particularly individuals with mobility or visual impairments. It explores how urban navigation systems can become more inclusive by accounting for real-world accessibility challenges rather than simply focusing on speed or distance.
The research was conducted by Konstantinos Kaselouris, Xenia Karekla, Anastasia Koupani, and Konstantinos Gkiotsalitis, who are affiliated with the National Technical University of Athens (NTUA). Their work is part of a broader collaborative effort involving consortium partners, bringing together expertise from different institutions and disciplines in the field of urban mobility and transport systems.
The main objective of the study is to develop a routing model that can support different types of pedestrians, including those who are mobility-impaired or visually impaired. Unlike conventional navigation tools, which usually prioritise the shortest path, this model integrates accessibility factors into route planning. In doing so, it aims to provide safer and more practical routes tailored to individual needs.
To achieve this, the researchers developed a multicriteria optimisation model that evaluates pedestrian pathways based on several physical and environmental characteristics. These include factors such as the width of footways, the slope of the terrain, kerb design, the presence of tactile paving, and potential obstacles along the path. The model was tested using data collected from more than 400 locations in Penteli, a suburban area of Athens, allowing the researchers to generate detailed accessibility maps for different user groups.
The findings reveal a significant imbalance in how accessible urban environments actually are. While a large proportion of pathways are suitable for physically able pedestrians, only a very small percentage meet the requirements of mobility-impaired users. This highlights a critical gap in urban infrastructure and demonstrates how current city designs often exclude vulnerable populations.
In addition to the theoretical model, the study also proposes a practical application in the form of a mobile navigation tool. This application can provide users with personalised routes that either ensure full accessibility or minimise barriers as much as possible. Such a tool not only supports individuals in their daily mobility but also offers valuable insights for urban planners and policymakers.
Overall, the study emphasises the importance of shifting the focus of urban navigation from efficiency alone to inclusivity and equity. By integrating accessibility into routing systems, the proposed model contributes to the development of more inclusive cities, where all individuals can move safely and independently.
Read the full article here.