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329 results on '"Vortisch, Peter"'

4. Analysing Long-Term Effects of the Covid-19 Pandemic on Last-Mile Delivery Traffic Using an Agent-Based Travel Demand Model

Author

Reiffer, Anna, Kübler, Jelle, Briem, Lars, Kagerbauer, Martin, Vortisch, Peter, Meyer, Gereon, Series Editor, Beiker, Sven, Editorial Board Member, Bekiaris, Evangelos, Editorial Board Member, Cornet, Henriette, Editorial Board Member, D'Agosto, Marcio de Almeida, Editorial Board Member, Di Giusto, Nevio, Editorial Board Member, di Paola-Galloni, Jean-Luc, Editorial Board Member, Hofmann, Karsten, Editorial Board Member, Kováčiková, Tatiana, Editorial Board Member, Langheim, Jochen, Editorial Board Member, Van Mierlo, Joeri, Editorial Board Member, Voege, Tom, Editorial Board Member, Antoniou, Constantinos, editor, Busch, Fritz, editor, Rau, Andreas, editor, and Hariharan, Mahesh, editor

Published
2023
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30. Modeling travel demand over a period of one week: The mobiTopp model

Author

Mallig, Nicolai and Vortisch, Peter

Subjects
Computer Science - Computational Engineering, Finance, and Science
Abstract

When mobiTopp was initially designed, more than 10 years ago, it has been the first travel demand simulation model intended for an analysis period of one week. However, the first version supported only an analysis period of one day. This paper describes the lessons learned while extending the simulation period from one day to one week. One important issue is ensuring realistic start times of activities. Due to differences between the realized trip durations during the simulation and the trip durations assumed when creating the activity schedule, the realized activity schedule and the planned activity schedule may deviate from each other at some point in time during simulation. A suitable rescheduling strategy is needed to prevent this. Another issue is the different behavior at weekends, when more joint activities take place than on weekdays, resulting in an increased share of trips made using the mode car as passenger. If a mode choice model that takes availability of ride-sharing opportunities into account is used, it can be difficult to reproduce the correct modal split without modeling explicitly these joint activities. When modeling travel demand for a week, it is also important to account for infrequent long-distance trips. While the share of these trips is low, the total number is not negligible. It seems that these long-distance trips are not well covered by the destination choice model used for the day-to-day trips, indicating the need for a long-distance trip model of infrequent events.

Published
2017

49. Quickest Paths in Simulations of Pedestrians

Author

Kretz, Tobias, Grosse, Andree, Hengst, Stefan, Kautzsch, Lukas, Pohlmann, Andrej, and Vortisch, Peter

Subjects
Physics - Physics and Society, Computer Science - Multiagent Systems
Abstract

This contribution proposes a method to make agents in a microscopic simulation of pedestrian traffic walk approximately along a path of estimated minimal remaining travel time to their destination. Usually models of pedestrian dynamics are (implicitly) built on the assumption that pedestrians walk along the shortest path. Model elements formulated to make pedestrians locally avoid collisions and intrusion into personal space do not produce motion on quickest paths. Therefore a special model element is needed, if one wants to model and simulate pedestrians for whom travel time matters most (e.g. travelers in a station hall who are late for a train). Here such a model element is proposed, discussed and used within the Social Force Model., Comment: revised version submitted

Published
2011
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50. Extended Range Telepresence for Evacuation Training in Pedestrian Simulations

Author

Arias, Antonia Perez, Hanebeck, Uwe D., Ehrhardt, Peter, Hengst, Stefan, Kretz, Tobias, and Vortisch, Peter

Subjects
Computer Science - Human-Computer Interaction, Computer Science - Multiagent Systems
Abstract

In this contribution, we propose a new framework to evaluate pedestrian simula-tions by using Extended Range Telepresence. Telepresence is used as a virtual reality walking simulator, which provides the user with a realistic impression of being present and walking in a virtual environment that is much larger than the real physical environment, in which the user actually walks. The validation of the simulation is performed by comparing motion data of the telepresent user with simulated data at some points of the simulation. The use of haptic feedback from the simulation makes the framework suitable for training in emergency situations., Comment: Contribution to Pedestrian and Evacuation Dynamics 2010 (PED2010) conference

Published
2010
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