We try to harmonise the differences between demand and supply orientated planning philosophies in the rail sector, by quantitatively showing the interactional effects between effort and effects on demand, under special consideration of feasibility.
When planning rail service offers
there are limits set by transport links and nodes, dependant on the rail infrastructure, from the operators point of view
and from the point of view of the passenger, compromises need to be found between fast connections, connecting hubs and servicing a larger catchment area.
The third dimension is given by the operational effort under special consideration of possible jumps in costs.
The complex parameters require, depending on the question at hand, different planning depths. Usually, questions concerned with supply and operation planning can only be solved though iterative approaches.