In logistic problems, an Integral Multi-Commodity Network Design Problem
on a time-space network is often used to model the problem of routing
transportation means and assigning freight units to those means. In
Physical Internet and Synchromodal networks an interactive planning
approach is preferable, meaning that calculation times of a single
planning step should be short. In this paper we provide finding ways to
reduce the number of variables in the problem formulation, that are
effective at reducing the computation time for ILP-based solution
methods.