Transport demand represents the essential basis in the design of public transport services. Information on this is accordingly a necessary prerequisite for the preparation of supply. In the following, a general approach is presented using the example of the European night train market, with which potentials can be derived despite little knowledge of the mobility needs of the market and demand matrices can be drawn up as a basis for economic calculations. By calculating a heuristic rule, the optimal path through a network in line planning is not exclusively a function of the edge evaluations but considers the node potentials determined this way. Transport demand represents the essential basis in the design of public transport services. Information on this is accordingly a necessary prerequisite for the preparation of supply. In the following, a general approach is presented with which potentials can be derived despite little knowledge of the mobility needs of the market. In the context of graph theory, the potential of nodes is evaluated and these are included downstream to the edge selection in form of a rucksack problem. By calculating a heuristic rule, the optimal path through a network in line planning is therefore not exclusively a function of the edge evaluations but considers the node potentials as well. Based on this demand matrices can be drawn up as a basis for economic calculations. Regarding the current debate on the expansion of night train services in Europe, this approach can be adapted to the conception of an overnight train. An overview of all night trains in Northern, Central and Western Europe in 2021 is provided for this purpose and the suitability of the approach is demonstrated using an example. It will be successful in setting up a route network from which passenger flows can be derived. However, possible adaptions that can be considered as second-best solutions are not taken into account and require further development of the approach.

交通需求是公共交通服务设计的重要基础。因此，这方面的信息是准备供应的必要前提。在下文中，以欧洲夜行列车市场为例提出了一种通用方法，尽管对市场的移动需求知之甚少，但可以得出潜力，并且可以制定需求矩阵作为经济计算的基础。通过计算启发式规则，在线规划中通过网络的最佳路径不仅仅是边缘评估的函数，而是考虑了以这种方式确定的节点电位。交通需求是公共交通服务设计的重要基础。因此，这方面的信息是准备供应的必要前提。在下文中，提出了一种通用方法，尽管对市场的移动需求知之甚少，但仍然可以获得潜力。在图论的上下文中，评估节点的潜力，这些节点以背包问题的形式包含在边选择的下游。因此，通过计算启发式规则，在线规划中通过网络的最佳路径不仅是边缘评估的函数，而且还考虑了节点电位。基于此，可以制定需求矩阵作为经济计算的基础。关于目前关于在欧洲扩展夜行列车服务的争论，这种方法可以适用于过夜列车的概念。为此，本文概述了 2021 年北欧、中欧和西欧的所有夜行列车，并通过示例证明了该方法的适用性。 它将成功地建立了一个可以从中获得客流的路线网络。然而，可以被认为是次优解决方案的可能调整没有被考虑在内，需要进一步开发该方法。