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Technical Specifications for Interoperability (TSIs)

The Technical Specifications for Interoperability (TSIs) define the technical and operational standards which must be met by each subsystem or part of subsystem in order to meet the essential requirements and ensure the interoperability of the railway system of the European Union.

New in July 2025

Recommendations For Use

Deficiencies in TSIs

Access to all TSIs

Energy TSI

This TSI concerns the energy subsystem and covers all fixed installations necessary to achieve interoperability that are required to supply traction energy to a train.

Infrastructure TSI

This TSI covers the infrastructure structural subsystem (line layout, track parameters, platforms, load resistance) and the maintenance functional subsystem for infrastructure (train washing plants, water restocking, refueling, toilet discharge facilities, and electrical shore supplies).

Rolling Stock - Locomotives and Passengers TSI

This TSI concerns the rolling stock subsystem and applies to the following types of rolling stock: self-propelling thermal or electric trains, thermal or electric traction units, passenger carriages, mobile railway infrastructure construction and maintenance equipment.

Noise TSI

In line with the proportionality principle, this TSI sets out the optimal level of harmonisation related to specifications on the rolling stock subsystem (for both locomotives and passenger rolling stock and, freight wagons) intended to limit the noise emission of the railway system of the European Union.

Safety in Railway Tunnels TSI

This TSI concerns the control command and signalling, infrastructure, energy, operation and traffic management, and rolling stock (locomotives and passenger units) subsystems. It applies to new, renewed and upgraded tunnels which are located on the rail network of the European Union.

Control Command and Signalling TSI

This TSI concerns the control command and signalling on-board and trackside subsystems. It applies to control-command and signalling on-board subsystems of vehicles which are (or are intended to be) operated on and control-command and signalling trackside subsystems of the rail network of the European Union.

Persons with Disabilities and with Reduced Mobility TSI

This TSI applies to the infrastructure, operation and traffic management, telematics applications and rolling stock subsystems. It covers all aspects of these subsystems which are relevant to accessibility for persons with disabilities and persons with reduced mobility.

Operation and Traffic Management TSI

This TSI applies to the operation and traffic management subsystem of infrastructure managers and railway undertakings related to the operation of trains on the rail system of the European Union.

Telematics Applications for Passenger service TSI

This TSI applies to the operation and traffic management subsystem of infrastructure managers and railway undertakings related to the operation of trains on the rail system of the European Union.

Telematics Applications for Freight service TSI

This TSI concerns the telematics applications subsystem and applies to applications for freight services, including information systems (real-time monitoring of freight and trains), marshalling and allocation systems, reservation, payment and invoicing systems, management of connections with other modes of transport and production of electronic accompanying documents.

Related documents

TSIs general application guide 2023

English (1.26 MB - PDF)
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TSIs chronology table

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TSI deficiencies – Publication #2 – December 2025

English (156.22 KB - XLSX)
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TSI deficiencies - archive

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Task force on the winter performance of composite brake blocks

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Standards quoted in TSIs

English (74.21 KB - XLSX)
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