D3.4 – Use cases and scenarios for cost-effective fail-safe highly accurate train positioning demos on G1 regional lines

*UNDER ERJU APPROVAL

The present document represents the deliverable D3.4 with the title “Use Cases and Scenarios for Absolute Safe Train Positioning Systems (ASTP) demos on G1 Regional Lines”. This deliverable aims to provide a set of Use Cases and Scenarios that reflect the operational behaviour of a Regional Line, in relation to some ASTP functions. The concept of a Use Case or Scenario is broadly defined in the industry, but in the context of this document it must be understood as a “sequence of steps or actions that defines the interaction between different actors (being those humans or technical systems) in a given situation”. Following that description, this document gathers a list of potential uses of an ASTP system in a Regional Line environment. The main actors involved in the Use Cases or Scenarios described here are the ETCS system (its trackside or on-board part), and the Digital register (Map Data). In the scope of this deliverable, ASTP is a system under consideration which is put into the regional lines context using the defined Use Cases and Scenarios. Once this deliverable is released, a selected subset of Use Cases and Scenarios shall be verified by demonstrators; this verification is the objective of the subsequent FP6 WP8 Task 8.5. This later step shall serve to demonstrate that the technology developed in other Flagship Projects (e.g., FP1, FP2) is applicable and fits the customer needs when it is applied to the Regional Lines, by using the demonstrators created in FP6.