Asomnia: A Service-Oriented Middleware for Ambient Information Access. - Karl Rehrl; Wernher Behrendt; Manfred Bortenschlager; Harald Rieser; Rupert Westenthaler; Siegfried Reich (DEXA, 2003)

Towards a Service-Oriented Architecture. - Karl Rehrl; Manfred Bortenschlager; Siegfried Reich; Harald Rieser; Rupert Westenthaler (MOBIS, 2004)

Assisting Multimodal Travelers: Design and Prototypical Implementation of a Personal Travel Companion. - Karl Rehrl; Stefan Bruntsch; Hans-Joachim Mentz (IEEE Trans. Intell. Transp. Syst., 2007)

Smartphone-based information and navigation aids for public transport travellers. - Karl Rehrl; Nicolas Göll; Sven Leitinger; Stefan Bruntsch; Hans-Jörg Mentz (Location Based Services and TeleCartography, 2007)

Providing other people's trails for navigation assistance in physical environments. - Erich Gams; Karl Rehrl; Daniel Kaschl (Int. J. Spatial Data Infrastructures Res., 2008)

An Analysis of Direction and Motion Concepts in Verbal Descriptions of Route Choices. - Karl Rehrl; Sven Leitinger; Georg Gartner; Felix Ortag (COSIT, 2009)

Comparing the Effectiveness of GPS-Enhanced Voice Guidance for Pedestrians with Metric- and Landmark-Based Instruction Sets. - Karl Rehrl; Elisabeth Häusler; Sven Leitinger (GIScience, 2010)

Geoweb verbindet WWW und physische Welt. - Karl Rehrl (HMD Prax. Wirtsch., 2010)

Using GPS Trajectories to Create a Dynamic Network of Significant Locations as an Abstraction of Road Maps. - Reinhard Stumptner; Bernhard Freudenthaler; Jürgen Hönigl; Karl Rehrl; Josef Küng (EUROCAST (1), 2011)

Motion pattern analysis enabling accurate travel mode detection from GPS data only. - Richard Brunauer; Michael Hufnagl; Karl Rehrl; Andreas Wagner (ITSC, 2013)

Action and interaction in volunteered geographic information: a workshop review. - Peter Mooney; Karl Rehrl; Hartwig H. Hochmair (J. Locat. Based Serv., 2013)

A Conceptual Model for Analyzing Contribution Patterns in the Context of VGI. - Karl Rehrl; Simon Gröchenig; Hartwig H. Hochmair; Sven Leitinger; Renate Steinmann; Andreas Wagner (Progress in Location-Based Services, 2013)

Estimating Completeness of VGI Datasets by Analyzing Community Activity Over Time Periods. - Simon Gröchenig; Richard Brunauer; Karl Rehrl (AGILE Conf., 2014)

Deriving driver-centric travel information by mining delay patterns from single GPS trajectories. - Richard Brunauer; Karl Rehrl (IWCTS@SIGSPATIAL, 2014)

Digging into the history of VGI data-sets: results from a worldwide study on OpenStreetMap mapping activity. - Simon Gröchenig; Richard Brunauer; Karl Rehrl (J. Locat. Based Serv., 2014)

Pedestrian navigation with augmented reality, voice and digital map: final results from an in situ field study assessing performance and user experience. - Karl Rehrl; Elisabeth Häusler; Sven Leitinger; Daniel Bell (J. Locat. Based Serv., 2014)

Towards a Qualitative Assessment of Changes in Geographic Vector Datasets. - Karl Rehrl; Richard Brunauer; Simon Gröchenig (AGILE Conf., 2015)

Supporting road maintenance with in-vehicle data: Results from a field trial on road surface condition monitoring. - Richard Brunauer; Karl Rehrl (ITSC, 2016)

Generation of Meaningful Location References for Referencing Traffic Information to Road Networks Using Qualitative Spatial Concepts. - Karl Rehrl; Richard Brunauer; Simon Gröchenig; Eva Lugstein (LBS, 2016)

A Framework for Data-Centric Analysis of Mapping Activity in the Context of Volunteered Geographic Information. - Karl Rehrl; Simon Gröchenig (ISPRS Int. J. Geo Inf., 2016)

Collecting floating car data with smartphones: results from a field trial in Austria. - Karl Rehrl; Richard Brunauer; Simon Gröchenig (J. Locat. Based Serv., 2016)

Evaluating GPS sampling rates for pedestrian assistant systems. - Cornelia Schneider; Sebastian Zutz; Karl Rehrl; Richard Brunauer; Simon Gröchenig (J. Locat. Based Serv., 2016)

Network-wide link flow estimation through probe vehicle data supported count propagation. - Richard Brunauer; Stefan Henneberger; Karl Rehrl (ITSC, 2017)

Optimization and Evaluation of a High-Performance Open-Source Map-Matching Implementation. - Karl Rehrl; Simon Gröchenig; Michael H. Wimmer (AGILE Conf., 2018)

Recognizing Spatio-Temporal Traffic Patterns at Intersections Using Self-Organizing Maps. - Richard Brunauer; Nina Schmitzberger; Karl Rehrl (IWCTS@SIGSPATIAL, 2018)

Why did a vehicle stop? A methodology for detection and classification of stops in vehicle trajectories. - Karl Rehrl; Simon Gröchenig; Stefan Kranzinger (Int. J. Geogr. Inf. Sci., 2020)

Evaluating Localization Accuracy of Automated Driving Systems. - Karl Rehrl; Simon Gröchenig (Sensors, 2021)

Which quality is a route? A methodology for assessing route quality using spatio-temporal metrics. - Karl Rehrl; Stefan Kranzinger; Simon Gröchenig (Trans. GIS, 2021)

Towards a standardized workflow for creating high-definition maps for highly automated shuttles. - Karl Rehrl; Simon Gröchenig; Thomas Piribauer; Roland Spielhofer; Patrick Weissensteiner (J. Locat. Based Serv., 2022)