  Hadronic transport approaches based on an effective solution of the
relativistic Boltzmann equation are widely applied for the dynamical
description of heavy ion reactions at low beam energies. At high densities, the
assumption of binary interactions often used in hadronic transport approaches
may not be applicable anymore. Therefore, we effectively simulate the
high-density regime using the local forced canonical thermalization. This
framework provides the opportunity to interpolate in a dynamical way between
two different limits of kinetic theory: the dilute gas approximation and the
ideal fluid case. This approach will be important for studies of the dynamical
evolution of heavy ion collisions at low and intermediate energies as
experimentally investigated at the beam energy scan program at RHIC, and in the
future at FAIR and NICA. On the other hand, this new way of modelling hot and
dense strongly-interacting matter might be relevant for small systems at high
energies (LHC and RHIC) as well.
