‘accident’ means an unwanted or unintended sudden event or a specific chain of such events which have harmful consequences; accidents are divided into the following categories: collisions, derailments, level-crossing accidents, accidents to persons caused by rolling stock in motion, fires and others;

‘entity in charge of maintenance’ means an entity in charge of maintenance of a vehicle, and registered as such in the National Vehicle Register;

‘incident’ means any occurrence, other than an accident, associated with the operation of trains and affecting the safety of operation;

‘infrastructure manager’ means any body or undertaking that is responsible in particular for establishing and maintaining railway infrastructure, or a part thereof, as defined in Article 3 of Directive 91/440/EEC, which may also include the management of infrastructure control and safety systems. The functions of the infrastructure manager on a network or part of a network may be allocated to different bodies or undertakings.

‘interfaces’ means all points of interaction during a system or subsystem life-cycle, including operation and maintenance where different actors of the rail sector will work together in order to manage the risks;

‘management system’ means either a safety management system as defined in the Railways and Other Guided Transport Systems (Safety) Regulations 2006, or the system of maintenance of entities in charge of maintenance complying with requirements laid down in paragraph 3 of Regulation 18A of the Railways and Other Guided Transport Systems (Safety) Regulations 2006 or paragraph 55B of the Schedule to the Channel Tunnel (Safety) (Amendment) Order 2013;

‘monitoring’ means the arrangements put in place by railway undertakings, infrastructure managers or entities in charge of maintenance to check their management system is correctly applied and effective;

‘railway system’ means the totality of the subsystems in Great Britain for structural and operational areas, as defined in paragraph 2(1) to 2(7) of Annex II to Directive 2008/57/EC, as well as the management and operation of the system as a whole;

‘railway undertaking’ means a public or private undertaking, licensed according to applicable legislation, the activity of which is to provide transport of goods and/or passengers by rail on the basis that the undertaking must ensure traction; this also includes undertakings which provide traction only.

‘accident’ means an unwanted or unintended sudden event or a specific chain of such events which have harmful consequences; accidents are divided into the following categories: collisions, derailments, level-crossing accidents, accidents to persons caused by rolling stock in motion, fires and others;

‘entity in charge of maintenance’ means an entity in charge of maintenance of a vehicle, and registered as such in the National Vehicle Register;

‘incident’ means any occurrence, other than an accident, associated with the operation of trains and affecting the safety of operation;

‘infrastructure manager’ means any body or undertaking that is responsible in particular for establishing and maintaining railway infrastructure, or a part thereof, as defined in Article 3 of Directive 91/440/EEC, which may also include the management of infrastructure control and safety systems. The functions of the infrastructure manager on a network or part of a network may be allocated to different bodies or undertakings;

‘interfaces’ means all points of interaction during a system or subsystem life-cycle, including operation and maintenance where different actors of the rail sector will work together in order to manage the risks;

‘management system’ means either a safety management system as defined in the Railways (Safety Management) Regulations (Northern Ireland) 2006, or the system of maintenance of entities in charge of maintenance complying with requirements laid down in paragraph 3 of Regulation 16AA of the Railways (Safety Management) Regulations (Northern Ireland) 2006;

‘monitoring’ means the arrangements put in place by railway undertakings, infrastructure managers or entities in charge of maintenance to check their management system is correctly applied and effective;

‘national safety authority’ has the meaning provided for “safety authority” in the Railways (Safety Management) Regulations (Northern Ireland) 2006;

‘railway system’ means the totality of the subsystems in Northern Ireland for structural and operational areas, as defined in paragraph 2(1) to 2(7) of Annex II to Directive 2008/57/EC, as well as the management and operation of the system as a whole;

‘railway undertaking’ means a public or private undertaking, licensed according to applicable legislation, the activity of which is to provide transport of goods and/or passengers by rail on the basis that the undertaking must ensure traction; this also includes undertakings which provide traction only.