On revision of TSI & ERA with focus on rail vehicles - overview of technical items

The European Union Agency for Railways (ERA) has detailed interoperability requirements for the interface between the Control-Command and Signalling (CCS) Track-side and other subsystems. These requirements are outlined in the document "Interface between control-command signalling trackside and other subsystems" (v.5 24-03-2023). The document is organized into sections that address various technical specifications and interoperability needs, including vehicle design and operation, electromagnetic compatibility, conformity assessment, derailment detection, and technical characteristics for non-TSI compliant Train Detection Systems (TDS).

In the vehicle design and operation section, the document specifies detailed requirements for aspects such as axle distances, wheel geometry, the use of sanding equipment, on-board flange lubrication, composite brake blocks, vehicle axle load and metal construction, shunting behavior, and wheel impedance. These requirements ensure that vehicles are designed and operated in a manner that is compatible with CCS systems and infrastructure, thereby promoting the seamless interoperability of the rail network.

The electromagnetic compatibility section sets forth requirements concerning electromagnetic fields, conducted interference, and the use of magnetic or eddy current brakes. It includes specific limits and evaluation parameters for vehicle emissions and traction current, along with measurement specifications. These provisions are essential to prevent electromagnetic interference that could disrupt CCS operations and other subsystems, thereby maintaining the safety and reliability of communication and control systems across the rail network.

The conformity assessment section describes the processes for assessing and certifying interoperability constituents, such as axle counters. It provides updated tables and additional comments on the parameters assessed for certification. This section ensures that all components meet the necessary standards for interoperability within the European rail network, facilitating the certification of equipment and systems essential for safe and efficient rail operations.

Derailment detection and prevention are comprehensively addressed, highlighting the requirements for signal processing and on-board systems. This includes general requirements for Derailment Prevention Function (DPF), Derailment Detection Function (DDF), and Derailment Detection and Actuation Function (DDAF). The document specifies the operational parameters of these systems, including the automatic application of brakes without driver intervention and the use of electronic tools for signal transmission to the driver’s cab. These measures ensure rapid detection and response to derailments, thereby enhancing safety and minimizing risks and damages.

Finally, the document covers special vehicles such as On Track Machines, Road-Rail vehicles, and other specialized equipment. It outlines the specific requirements and conditions for these vehicles to comply with either the TSI or national rules, depending on their characteristics and intended use. This ensures that these vehicles can operate safely and efficiently within the rail network while providing the necessary flexibility for different vehicle types and applications.