Requirements and criteria on highly efficient matching of train demand to offered trains paths (ATRANS 2.1)

ATRANS 2.1子项目的目标是确定科学的列车运行线和列车运行线系统评价参数，以提高计划的稳定性、质量和鲁棒性。这为列车路径分配的附加方法和ATRANS 2.2的知识提供了研究基础。必须考虑到对每一个单一列车路径购买者的歧视，并使其达到特定和严重的程度。因此，国际，欧洲和国家的法律的规范的影响将被评估的列车路径分配，并将通过将它们集成到最优列车路径分配的线性规划建模。列车路径分配的计划的稳定性和鲁棒性将通过灵敏度分析进行研究。一方面考虑线性规划的右侧变差，以求得最优的列车运行路径分配;另一方面考虑随机需求，对列车运行路径分配进行模拟，采用基于事件的模拟方法，该模型是为研究机场运行计划算法而开发的，所获得的参数是未来列车路径分配的必要条件，加强对跨欧洲铁路货运的研究和提高效率。此外，在质量评估的范围内，必须考虑时变和随机需求。用于敏感性分析的数据集将来自子项目ATRANS 1的列车路径结构。额外的列车路径将被添加到这些结构中，通过现有的调度工具TAKT进行优化。

Goal of the subproject ATRANS 2.1 is the determination of scientific parameters for train paths' and train path systems' evaluation, in order to improve the plan stability, quality and robustness.A method for optimal assignment of train paths by the branch-cut-and-price algorithm has been already developed, which implies the research foundation in cooperation with an additional method for train paths assignment and the gained knowledge of ATRANS 2.2.The principles of non-discrimination of each single train path purchaser must be considered and sufficed to a particular and serious degree. Therefore, the effects of the international, European and national legal norms will be evaluated for the train paths assignment and will be modelled by integrating them into linear programs for optimal train paths assignment.The plan stability and robustness of train paths assignment will be investigated by a sensitivity analysis. On the one hand, the right hand side's variation of the linear program will be regarded for the optimal train paths assignment and on the other hand, the train paths assignment will be simulated under consideration of a stochastic demand.For that purpose, an approach for event based simulation will be adapted, which has been developed in beforehand for the investigation of plan algorithms of airport operations.The gained parameters are a necessity for the train paths assignment's future and the enhanced research and efficiency improvements of the trans-European rail freight transport. Furthermore, the time varying and stochastic demands must be considered under the inclusion of the quality evaluation.The data set which will be used for sensitivity analysis will be derived from train path structures of subproject ATRANS 1. Additional train paths will be added to these structures optimally by the already existing timetabling tool TAKT.