ISPRS-Annals ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Annals ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9050 Copernicus Publications Göttingen, Germany 10.5194/isprs-annals-XI-5-2026-25-2026 An Open Source Framework for Routing and Event Management in University Campuses Çardak Gökdemir 1 2 Topcu İbrahim 3 Anbaroğlu Berk 3 Graduate School of Science and Engineering, Department of Geomatics Engineering, Hacettepe University, Ankara, Türkiye General Directorate of Mapping, Ankara, Türkiye Department of Geomatics Engineering, Hacettepe University, Ankara, Türkiye 10 07 2026 XI-5-2026 25 33 Copyright: © 2026 Gökdemir Çardak et al. 2026 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://isprs-annals.copernicus.org/articles/XI-5-2026/25/2026/isprs-annals-XI-5-2026-25-2026.html The full text article is available as a PDF file from https://isprs-annals.copernicus.org/articles/XI-5-2026/25/2026/isprs-annals-XI-5-2026-25-2026.pdf

The ever-evolving nature of university campuses presents unique challenges for web-based routing and event coordination, as physical layouts frequently change due to ongoing construction and development. To address these dynamic spatial and logistical needs, this paper designs and develops an open-source, web-based framework for routing and event management. The framework implements routing functionalities based on OpenStreetMap using Open Source Routing Machine (OSRM). The framework supports three distinct user groups: (i) guests, (ii) registered students and staff, and (iii) supervisors. To assess OSRM's reliability in a campus setting, we compared its route distances with those obtained from the legacy geospatial database. For pedestrian and bicycle modes, strong correlations of 90% and 89% were found across thousands of routes connecting 78 campus units, confirming OSRM as a reliable routing solution. A key strength of the framework lies in its modular, open-source architecture, which makes it easily adaptable and replicable across other campus settings with minimal customization. The replicability workshop demonstrated that six out of seven participants coming from different backgrounds have successfully launched the application on their own computers. The framework is referred to as <em>ROAMer</em>, intended to stand for <em>Replicable OSRM Application for Campus Routing and Event Reporting</em>.<br />Project&rsquo;s GitHub Repo: <code>https://github.com/ROAMer-Geo/Web</code>