Fredrik Johansson


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Research results from Fredrik


Waiting pedestrians in the social force model

Microscopic simulation of pedestrian traffic is an important and increasingly popular method to evaluate the performance of existing or proposed infrastructure. The social force model is a common model in simulations, describing the dynamics of...

Local performance measures of pedestrian traffic

Efficient interchange stations, where travelers are changing lines and/or travel modes, are essential for the functionality of the whole public transport system. By studying pedestrian movements, the level of service and effectiveness imposed by the...

The Many Roles of the Relaxation time Parameter in Force based Models of Pedestrian...

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...

Pedestrian traffic simulation platform

This is documentation of a simulation platform for simulation of pedestrian traffic, such as at public transport interchange stations. The simulation platform takes a microscopic perspective, and thus simulates each pedestrian separately and uses as...

Performance evaluation of railway platform design using microscopic simulation

Efficient interchange stations, where travelers are changing lines and/or travel modes, are essential for the functionality of the whole public transport system. By studying pedestrian movements, the level of service and effectiveness imposed by the...