Value chain integration is an ongoing challenge: while computing power has improved, there is little modeling consistency across the system. This paper bridges this gap by proposing a novel formulation for train scheduling, a linking element of value chains, using the Unit-Operation-Port-State Superstructure (UOPSS). Train scheduling is a challenging problem: rail lines can be hundreds of kilometers long with train crossing strategies that are based on a train station level, while also requiring results with a minute-time scale resolution. In mixed-use rail systems with limited passing loop infrastructure, trains have different passing priorities and lengths, thus differing in their ability to use passing loops. The proposed model is the basis of the Hatch Rail Optimizer (HRO) software. In addition to small case studies, the power of HRO is demonstrated through a practical case study involving a 370 km rail corridor with five different train sizes over a week-long scheduling horizon.

价值链集成是一个持续的挑战：尽管计算能力得到了提高，但是整个系统之间的建模一致性却很少。本文通过提出一种新的列车编排方案来弥合这一差距，列车编排是价值链的链接元素，它使用单元操作-端口状态上层结构（UOPSS）。火车时刻表是一个具有挑战性的问题：采用基于火车站级别的火车穿越策略时，铁路线可能长达数百公里，同时还需要具有分钟尺度的分辨率的结果。在具有有限通行基础设施的混合用途铁路系统中，火车具有不同的通行优先级和长度，因此使用通行环路的能力也有所不同。所提出的模型是舱口盖导轨优化器（HRO）软件的基础。除了小案例研究，