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The Many Roles of the Relaxation time Parameter in Force based Models of Pedestrian Dynamics
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering.
Delft University of Technology, Department of Transport & Planning.
Delft University of Technology, Department of Transport & Planning.
Delft University of Technology, Department of Transport & Planning.
2014 (English)In: Transportation Research Procedia, Elsevier, 2014, Vol. 2, 300-308 p.Conference paper (Other academic)
Abstract [en]

In force based models of pedestrian traffic, the relaxation time, τ, is related to the time it takes a pedestrian to adapt its motion to its preferences. An example of this is linear acceleration, but τ is also connected to how the agent adjusts to spatial variations in its preferred velocity, and affects evasive maneuvers. These many roles of τ may be a problem when calibrating force based models.

We compare linear acceleration, to new data on, and simulations of, turning movements. The results indicate that the models predict drifting of a magnitude that is not supported by the data.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 2, 300-308 p.
Keyword [en]
pedestrian simulation; force based models; calibration; relaxation time; social force model
National Category
Transport Systems and Logistics
Identifiers
URN: urn:nbn:se:liu:diva-119121DOI: 10.1016/j.trpro.2014.09.057OAI: oai:DiVA.org:liu-119121DiVA: diva2:819029
Conference
The Conference on Pedestrian and Evacuation Dynamics 2014 (PED 2014)
Available from: 2015-06-09 Created: 2015-06-09 Last updated: 2015-06-26

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Johansson, Fredrik
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Communications and Transport SystemsFaculty of Science & Engineering
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ReferencesLink to record
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