ABBREVIATIONS

A

ACB Accredited Certification Body (related to ECM)

AEB Automatic Emergency Braking

AI Artificial Intelligence

AENOR Asociación Española de Normalización y Certificación

AFNOR Association Française de Normalisation

ALARP As Low As Reasonable Practical

ALM Application Lifecycle Management

ANSSI French Cybersecurity Agency

APOM Authorization for the Placing on the Market

APIS Authorization for the Placing in Service

APM Automated People Mover

ARAF Autorité de Régulation des Activités Ferroviaires

AsBo Assessment Body

ASC Anti-Skid Control

ASIC Application Specific Integrated Circuits

ASPM Automatic Stopping Point Management

ASR Additional Speed Restriction

ATC Automatic Train Control

ATO Automatic Train Operation

ATP Automatic Train Protection

ATS Automatic Train Supervision

B

BCDR Business Continuity and Disaster Recovery

BCU Brake Control Unit

BEMU Battery Electric Multiple Unit

BEU Federal Office for Railway Accident Investigation (German)

BI Basic Integrity

BIA Business Impact Analysis (Cybersecurity)

BL Baseline

BLA Fire Extinguishing System (German)
BMA Fire Alarm System (German)

BMS Bearing Monitoring System

BOM Bill of Materials

BMU Bi-mode Multiple Unit

Bo-Bo Axle configuration with two bogies, each having two individually powered wheel-sets

BOStrab Trams Regulation for Construction & Operation

BS British Standard

BTM Balise Transmission Module

C

CA Conformity Assessment

CAPA Corrective Actions and Preventive Actions

CAS Collision Avoidance System

CBI Computer Based Interlocking

CBTC Communication Based Train Control

CCF Common-Cause Failure

CC Control Centre

CCO CCS Onboard

CCS Command Control and Signalling

CCT CCS Trackside

CCU Core Control Unit

CEN European Committee for Standardisation

CfU Conditions for use of the vehicle and other restrictions

CLP Checklist Point

CoP Code of Practice (CSM-RA)

COTS Commercial Out of The Shelf

CR Change Request

CRS Cybersecurity Requirements Specification

CSI Common Safety Indicators

CSM Common Safety Methods

CSMS Cybersecurity Management System

CST Common Safety Targets

CTC Conventional Train Control (Circuit diagram)

D

DAC Digital Axle Counter

DAC Digital Automatic Coupling

DAkkS German Accreditation Body (German)

DB Deutsche Bahn – German State Railways

DBV Driver's Brake Valve

DCS Distributed Control System

DCU Door Control Unit

DDEMU Double-Decker Electrical Multiple Units

DDU Driver Display Units

DeBo Designated Body

DEMU Diesel Electric Multiple Unit

DMI Driver Machine Interface

DMS Documents Management System

DMU Diesel Multiple Unit

DOORS Requirements Management Tool (IBM®)

DosTo Double-Decker Multiple Unit (German)

DoV Declaration of Verification

DPF Derailment Prevention Function

DRP Disaster Recovery Plan

DSA Digital Services Act

DSD Driver Safety Device

DVD Driver’s Vigilance Device

E

EAL Evaluation Assurance Level

EB Emergency Brake

EBA Federal Railway Authority (German)

E/E/PE Electrical / Electronic / Programmable Electronic

ECM Entity in Charge of Maintenance

EDB Electrodynamic Brake

EMC Electro Magnetic Compatibility

EMU Electric Multiple Unit

EN European Norm

ENE Energy (TSI)

ENISA EU Agency for Network and Information Security

EPSF National Safety Authority in France

ERA European Union Agency for Railways

ERATV ERA Register of Authorized Types of Vehicles

ERTMS European Rail Traffic Management System

ERE Explicit Risk Estimation (CSM-RA)

ESC ETCS System Compatibility

ETA Event Tree Analysis

ETCS European Train Control System

ETSI European Telecommunications Standards Institute

EUC Equipment Under Control

EUCC European Cybersecurity Certification Scheme on Common Criteria

EUV Railway Accident Investigation Regulation (German)

EVC European Vital Computer

EVN European Vehicle Number

F

FAI First Article Inspection

FAIR First Article Inspection Report

FAS Fire Alarm System

FFT Functional Fault Tree

FIT Failures in Time

FMECA Failure Mode, Effect and Criticality Analysis

FMS Fleet Management System

FoC First-of-Class-Vehicles

FOT Federal Office of Transport (Switzerland)

FPGA Field-Programmable Gate Arrays

FRMCS Future Railway Mobile Communication System

FRS Functional Requirements Specification

FS Full Supervision (ETCS)

FTA Fault Tree Analysis

FuSa Functional Safety

FZG Vehicle (German)

G

GAMAB Overall At Least Equally Good (French)

GASC Generic Application Safety Case

GFV Go For Validation

GPSC Generic Product Safety Case

GSM-R Global System for Mobile Communication – Rail

GoA Grade of Automation

GRMC Governance, Risk Management, and Compliance

H

HARA Hazard and Risk Analysis

HAZID Hazard Identification

HCMU Hydrogen-Combustion Multiple Unit

HEMU Hydrogen Electric Multiple Unit

HL Hazard Log

HMI Human Machine Interface

HOM Homologation

HSR High-Speed Railways

HS2 High Speed Two - high speed line connecting London with the Midlands and the North

HSE Health, Safety, and Environment

HST High Speed Trains

HVAC Heating, Ventilation and Air Conditioning

I

IAC Identification and Authentication Control

ICE Intercity-Express

ICT Information and Communications Technology

IEC International Electrotechnical Commission

ISA Independent Safety Assessor

INF Infrastructure (TSI)

ISMS Information Security Management System

ISR Inspection Report (Assessment Body)

ISV Intermediate Statement of Verification

J - K

Jama Requirements Management Tool (Jama Connect)

JRU Juridical Recording Unit

JU Joint Undertaking

KI Artificial Intelligence (German)

KPI Key Performance Indicator

L

LCC Life-Cycle Costs

LNTC ETCS Level NTC

LOC Locomotives

LoBR List of Basic Parameters

LRV Light Railway Vehicle

LSE Lead Safety Engineer

LSTM ETCS Level STM

LZB Line Train Control (German)

M

MCB Main Circuit Breaker

MCU Microcontroller Unit

MEM Minimum Endogenous Mortality

MMS Maintenance Management System

MoU Memorandum of Understanding

MTBF Mean Time Between Failures

MTTF Mean Time To Failure

MTTR Mean Time to Repair

MVB Multifunction Vehicle Bus

N

NANDO New Approach Notified and Designated Organisations

NBUE Emergency Brake Override (German)

NB-Rail Coordination Group of NoBos for Railways

NEA Emergency Entry and Exit Windows (German)

NIDS Network Intrusion Detection System

NIS Network and Information Security

NNTR Notified National Technical Rules

NoBo Notified Body

NC Normally Closed (safety relevant contact)

NCR Non-Conformance Report

NO Normally Open (safety relevant contact)

NOI Noise (TSI)

NMS Network Monitoring System

NRD National Reference Document

NSA National Safety Authority

NTC National Train Control

NTR National Technical Rules

NVR National Vehicle Register

O

O & M Operation and Maintenance

OBU On-Board Unit

OCC Operation Control Centre

OEM Original Equipment Manufacturer

OOU Out of Use

OpCo Operating Company

ORR Office of Rail and Road (Great Britain)

OSHA Occupational Safety and Health Administration

OSS One-Stop Shop

OT Operational Technology

OTM On–Track Machine

OTX Open Threat Exchange

P

PEP Project Execution Plan

PFH Probability of Dangerous Failure per Hour

PHA Preliminary Hazard Analysis

PHL Preliminary Hazard List

PIMS Privacy Information Management System

PIP Project Implementation Plan

PIS Passenger Information System

PL Performance Level (machinery safety)

PRD Product Requirements Documents

PRM Persons with Reduced Mobility (TSI)

PRS Product Requirements Specification

PSD Platform Screen Doors

PTO Public Transport Operator

PZB Intermittent Train Protection (German)

Q

QA Quality Assurance

QC Quality Control

QHSE Quality, Health, Safety and Environment

QM Quality Management

QMP Quality Management Plan

QMS Quality Management System

R

RAC Risk Acceptance Criterion

RAP Risk Acceptance Principle

RAMS Reliability, Availability, Maintainability, Safety

RBC Radio Block Centre (ETCS)

RBD Reliability Block Diagram

RCA Root Cause Analysis

RDD Reference Document Database (ERA)

RFU Recommendation For Use

RISC Railway Interoperability and Safety Committee

RINF Register of Infrastructure

RMP Risk Management Process

RMR Railway Mobile Radio

RMU Regional Multiple Units

RP Railway Package (EU)

RQC Requirements Capture

RQM Requirements Manager

RRC Radio Remote Control

RRI Route Related Information (ETCS)

RS Similar Reference Systems (CSM-RA)

RSSB Rail Safety And Standards Board (UK)

RST Rolling Stock

RTM Requirements Traceability Matrix

RU Railway Undertaking

S

SAD System Architecture Description

SAS Safety Acquirement Stage (German)

SAT Site Acceptance Tests

SASC Specific Application Safety Case

SAR Safety Assessment Report

SecRAC Security-Related Application Conditions

SIFA Driver’s Vigilance Device in Germany

SIL Safety Integrity Level

SIRF Vehicle Safety Guideline (German)

SL Security Level

SMS Safety Management System

SN System National Mode

SNV Swiss Association for Standardization

SOC Standard Operating Conditions

SR. Staff Responsible Mode

SRAC Safety-Related Application Conditions

SRS System Requirements Specification

SRS Similar Reference System

SRT Safety in Railway Tunnels (TSI)

STM Specific Transmission Module

SWQA Software Quality Assurance

SWRS Software Requirements Specification

T

TAB Technical Supervisory Authority (German)

TARA Threat and Risk Analysis (Cybersecurity)

TBD To Be Defined

TC Track Condition

TCMS Train Control and Monitoring System

TCN Train Communication Network

TCO Traction Cut-Off

TCU Traction Control Unit

TEN Trans-European Network

TeSiP Technical Safety Plan (German)

TFFR Tolerable Functional Failure Rate

THR Tolerable Hazard Rate

TIMS Train Integrity Monitoring System

TIRF Tolerable Individual Risk of Fatality

TIU Train Interface Unit

TRA Threat Risk Assessment

TSI Technical Specification for Interoperability

TSI CCS Control Command and Signalling TSI

TSI L&P Locomotives and Passengers TSI

TSI NOI Noise TSI

TSI WAG Freight wagons TSI

TSR Technical Safety Report

U

UGTMS Urban Guided Transport Management System

UIC International Union of Railways

UITP L‘Union Internationale des Transports Publics

UNI Italian Standards Body

UNIFE Union des Industries Ferroviaires Européennes

UPIC User Programmable Integrated Circuits

UPS Uninterruptible Power Supply

URS User Requirements Specification

V

V&V Verification and Validation

V2I Vehicle -to-Infrastructure

VAL Validation

VAPOM Vehicle Authorization for Placing on Market

VCD Vigilance Control Device

VDI Association of German Engineers (German)

VDS Vehicle Design Specification

VDV Association of German Transport Companies

VER Verification

VR Vehicle Release

VTA Vehicle Type Authorization

VUT Vehicle Under Test

W

WAG Wagen (German)

WP Work Programme

WSP Wheel Slide Protection

WTB Wired Train Bus

X - Y

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Z

ZSG Train Control Device (German)

ZEMU Zero Emission Multiple Unit

ZUB Train Control System (German)