  Microscopic approaches to the simulation of pedestrian dynamics rely on
modelling the behaviour of individual agents and their mutual interactions.
Regarding the spatial resolution, microscopic simulators are either based on
continuous (SpaceCont) or discrete (SpaceDisc) approaches. To combine the
advantages of both approaches, we propose to integrate SpaceCont and SpaceDisc
into a hybrid simulation model. Such a hybrid approach allows simulating
critical regions with a continuous spatial resolution and uncritical ones with
discrete spatial resolution while enabling consistent information exchange
between the two simulation models. We introduce a generic approach that
provides consistent solutions for the challenges resulting from coupling
diverging time steps and spatial resolutions. Furthermore, we present a dynamic
and density-sensitive approach to detect dense areas during the simulation run.
If a critical region is detected, the simulation model used in this area is
dynamically switched to a space-continuous one. The correctness of the hybrid
model is evaluated by comparison with a established simulator. Its superior
computational efficiency is shown by runtime comparison with a standard
microscopic simulation.on with the simulation results of other,
well-established simulation models.
