Isochrones in unimodal networks have been used in city planning for more than forty years. The information technology of the 21st century has enabled the calculation of them in multimodal networks. This means that various travel types, like using a bus, driving a car and going by feet, are observed. This takes the computation of isochrones to a much more complex level. We develop and improve algorithms that can be used to calculate large isochrones in multimodal networks. Questions regarding isochrones are examined and their results are visualized (for example how many people can travel to a given point within a specified time)

More information (including a live demo) can be found at the project website.





Bib Link

Doris Silbernagl, Nikolaus Krismer, Nikolaus Augsten and Günther Specht: Recommending OSM Tags To Improve Metadata Quality. In Proceedings of the 1st ACM SIGSPATIAL Workshop on Recommendations for Location-based Services and Social Networks, pages 6:1-6:10. ACM, 2017

Bib Link Download

Nikolaus Krismer, Doris Silbernagl, Günther Specht and Johann Gamper: Computing Isochrones in Multimodal Spatial Networks using Tile Regions. In Proceedings of the 29th International Conference on Scientific and Statistical Database Management, pages 33. 2017


Bib Link

Nikolaus Krismer, Doris Silbernagl, Johann Gamper and Günther Specht: osmPti2mmds-Erstellung von multimodalen Daten-sets aus OpenStreetMap und ÖPNV-Informationen. In: AGIT Journal für Angewandte Geoinformatik, (2) 2016, pp. 185-190

Bib Link

Doris Silbernagl, Nikolaus Krismer and Günther Specht: osmpg2java-Konvertierung von OSM Datenbankelementen zu JTS Objekten. In Angewandte Geoinformatik AGIT. 2016


Nikolaus Krismer, Doris Silbernagl, Martin Malfertheiner and Günther Specht: Elevation Enabled Bicycle Router Supporting User-Profiles. In GvD, pages 74-79, 2016.



Nikolaus Krismer, Günther Specht and Johann Gamper: Incremental Calculation of Isochrones Regarding Duration. In Grundlagen von Datenbanken, pages 41-46, 2014.