Robust Infrastructure



Nadine Friesen

Doctoral researcher


+49 241 80 25139



The rail infrastructure is recording high levels of capacity utilization and is already reaching its capacity limits in some cases, which could be further exacerbated in the future, in particular by the forecasted growth in European rail freight traffic. Without appropriate measures, this increase in capacity utilisation will lead to a decline in punctuality and an increased number of train path rejections. In order to meet these challenges, suitable new construction and expansion projects must be planned and a timetable must be drawn up that is as performance-optimised as possible. To achieve this, it is essential to know the capacity of the railway network.

According to the current state of railway operation research, analytical capacity determinations are carried out separately for railway lines and nodes. Therefore, there is no concatenation over several lines for one (sub)network. Taking into account the relationships between the individual sub-segments, this capacity calculation could be adapted to determine the capacity for contiguous areas. This gives a more realistic picture of the capacity of networks and the relevant bottlenecks that limit the capacity can be identified.

In the NeLE project, the analysis of the capacity of railway networks is to be carried out by examining connected lines using Max-Plus algebras and Petri networks. By linking these two models, it will be possible to gain more precise insights into the interrelationships within the framework of the performance analysis.