Uncontrolled When Printed Railway Group Standard Train Radio Systems for Voice and Related Messaging Communications Synopsis This document mandates the minimum requirements for radio systems that provide the principle means of voice and related messaging radio communications between trains and shore-based locations. Submitted by Signatures removed from electronic version Karl Reilly Project Manager Authorised by Anne Blakeney Acting Department Head Railway Group Standards Management This document is the property of the Rail Safety and Standards Board Limited. It shall not be reproduced in whole or in part without the written permission of the Department Head of Railway Group Standards Management, Rail Safety and Standards Board. Published by Rail Safety and Standards Board Evergreen House 160 Euston Road London NW1 2DX Copyright 2003 Rail Safety and Standards Board Limited Page 1 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications Issue record Issue Date Comments One December 2003 Original document, supersedes original train radio standard GO/RT3410, and shunting radio standard GO/OP0004 Page 2 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications Contents Section Description Page Part 1 General information 5 1.1 Scope of Railway Group Standards 5 1.2 General responsibilities 5 1.3 General compliance date 5 1.4 Health and safety responsibilities 5 1.5 Technical content 5 1.6 Supply 6 Part 2 Application of this document 7 2.1 Purpose 7 2.2 To whom these requirements apply 7 2.3 Application infrastructure controller 7 2.4 Application station operator 8 2.5 Application train operator 8 2.6 Application Rail Safety and Standards Board 9 2.7 Document management 9 2.8 Definitions and acronyms 9 Part 3 Requirement for installation 11 3.1 Train radio installation 11 3.2 Train radio fixed infrastructure installation 11 3.3 Responsibilities 11 Part 4 Train radio system requirements 13 4.1 Introduction 13 4.2 Basic functionality 13 4.3 Basic performance requirements 15 4.4 Defective equipment 16 4.5 Additional measures to support operational enhancements, where required 16 4.6 Further functionality 17 4.7 Use of the train radio system 18 Part 5 Train radio requirements 21 5.1 Introduction 21 5.2 Equipment requirements 21 Part 6 Train radio fixed infrastructure requirements 23 6.1 Introduction 23 6.2 Train radio fixed infrastructure 23 Part 7 System management and maintenance requirements 25 7.1 Introduction 25 Page 3 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications 7.2 System management and maintenance 25 Part 8 Operation of multiple radio systems 27 8.1 Introduction 27 8.2 Migration principles 27 8.3 Steady state principles 28 Part 9 Shunting radio 29 9.1 Introduction 29 9.2 Shunting radio requirements 29 References 30 Page 4 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications Part 1 General information 1.1 Scope of Railway Group Standards 1.1.1 The overall scope of Railway Group Standards, and specifically of the controlled infrastructure (as used in this Railway Group Standard), is set out in Appendix A of GA/RT6001. The specific scope of this Railway Group Standard is set out in Part 2. 1.2 General responsibilities 1.2.1 Railway Group Standards are mandatory on all Railway Group members and apply to all relevant activities that fall into the scope of each individual s Railway Safety Case. If any of those activities are performed by a contractor, the contractor s obligation in respect of Railway Group Standards is determined by the terms of the contract between the respective parties. Where a contractor is a duty holder of a Railway Safety Case, then Railway Group Standards apply directly to the activities described in its Railway Safety Case. 1.2.2 The Railway Group comprises Rail Safety and Standards Board Limited, the infrastructure controller and the train and station operators who hold Railway Safety Cases for operation on or related to the controlled infrastructure (as set out in GA/RT6001). 1.2.3 Rail Safety and Standards Board Limited is also known as RSSB. 1.2.4 Under the Railways (Safety Case) Regulations 2000, the duty holder (as defined in those Regulations) is responsible for ensuring that the requirements of Railway Group Standards are complied with. Contractual arrangements (including a lease at a station) do not of themselves relieve the duty holder of its obligations under those Regulations. 1.3 General compliance date 1.3.1 This Railway Group Standard comes into force and shall be complied with from 7 February 2004, except as specified in Part 2. Where the date specified in Part 2 is later than the above date, this is to allow Railway Group members sufficient time to achieve compliance with the specified exceptions. 1.3.2 After the compliance date, Railway Group members shall not deviate from the requirements set out in this Railway Group Standard. Where it is considered not reasonably practicable to comply with the requirements, authorisation not to comply shall be sought in accordance with GA/RT6001, GA/RT6004 or GA/RT6006. 1.4 Health and safety responsibilities 1.4.1 In issuing this Railway Group Standard, RSSB makes no warranties, express or implied, that compliance with all or any documents published by RSSB is sufficient on its own to ensure safe systems of work or operation. Each user is reminded of its own responsibilities to ensure health and safety at work and its individual duties under health and safety legislation. 1.5 Technical content 1.5.1 The technical content of this Railway Group Standard has been approved by: Jeff Allan, Principal Train Control and Communications Engineer, RSSB Richard Evans, Principal, Operations, RSSB. 1.5.2 Enquiries should be directed to RSSB Tel. 020 7904 7518 or e-mail enquiries@rssb.co.uk. Page 5 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications 1.6 Supply 1.6.1 Controlled and uncontrolled copies of this Railway Group Standard may be obtained from the Industry Safety Liaison Department, Rail Safety and Standards Board, Evergreen House, 160 Euston Road, London NW1 2DX or e-mail enquiries@rssb.co.uk. Page 6 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications Part 2 Application of this document 2.1 Purpose 2.1.1 This document contains the minimum mandatory requirements for radio systems that provide the principle means of voice and related messaging radio communications between trains and shore-based locations. 2.2 To whom these requirements apply 2.2.1 This document contains requirements that are applicable to duty holders of the infrastructure controller and train operator categories of Railway Safety Case. 2.3 Application infrastructure controller Scope and compliance 2.3.1 This document is applicable to all new and existing train radio fixed infrastructure. 2.3.2 This document is applicable to all work that affects train radio fixed infrastructure on Network Rail controlled infrastructure, whether new or as a modification. 2.3.3 The infrastructure controller shall provide train radio fixed infrastructure compliant with Parts 3, 4, 6, 7, 8 and 9 of this document no later than 1 January 2011 on all Network Rail controlled infrastructure. 2.3.4 Prior to 1 January 2011, if the infrastructure controller does not provide train radio fixed infrastructure compliant with Parts 4, 6, 8 and 9 of this document, then the infrastructure controller shall continue to provide legacy train radio fixed infrastructure. If this is the case, then: a) the infrastructure controller shall ensure that the legacy train radio fixed infrastructure maintains at least the level of functionality and performance provided at the date of publication of this document b) the infrastructure controller shall, in consultation with train operators, ensure that the requirements set out in Part 7 of this document are applied to the maintenance and system management of the legacy train radio fixed infrastructure c) the infrastructure controller shall, in consultation with train operators, develop and maintain a migration plan, compliant with the requirements of section 8.2 of this document, for migrating to train radio fixed infrastructure that is compliant with Parts 3, 4, 6, 7, 8 and 9 of this document. Exclusions from scope 2.3.5 From 1 January 2011, where a radio system is being used solely for shunting operations that are not taking place on running lines, it is permissible for the radio system not to comply with Parts 4, 5, 6, 7 and 8, provided the infrastructure controller ensures that the elements of the radio system for which the infrastructure controller has responsibility, comply with Parts 3 and 9 of this document. 2.3.6 This document is not applicable to the use of GSM-R hand-portables (sometimes referred to as IVRS systems) where used to supplement legacy or new train radio systems, for example to provide mitigation to specific risks in axle counter areas. Such systems are not considered to be train radio systems in the sense of this document. 2.3.7 This document is restricted to the train radio application. The measures in this document apply whether or not other applications are using the same infrastructure (for example, ERTMS). Page 7 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications 2.4 Application station operator 2.4.1 There are no requirements applicable to a station operator. 2.5 Application train operator Scope and compliance 2.5.1 This document is applicable to all new and existing elements of train radio systems that are the responsibility of train operators (see Part 3 of this document). 2.5.2 This document is applicable to all work that affects train radio equipment on vehicles, whether new or as a modification. 2.5.3 Train operators shall fit train radios compliant with Parts 3, 4, 5, 7 and 9 of this document in all trains that operate on Network Rail controlled infrastructure no later than the date determined by the migration plan required by section 8.2. 2.5.4 Prior to this date, if a train is not fitted with a train radio that is compliant with Parts 4, 5 and 9, of this document, then the train operator shall continue to use a legacy train radio. If this is the case, then: a) the train operator shall ensure that the legacy train radio is compatible with the train radio fixed infrastructure on the routes travelled by the train b) the train operator shall ensure that the legacy train radio maintains at least the level of functionality and performance provided at the date of publication of this document c) the train operator shall, in consultation with the infrastructure controller, ensure that the measures set out in Part 7 of this document are applied to the maintenance and system management of legacy train radios d) the train operator shall, in consultation with the infrastructure controller, develop and maintain a migration plan, compliant with the requirements of section 8.2 of this document, for migrating to train radios that are compliant with Parts 3, 4, 5, 7, 8 and 9 of this document. 2.5.5 None of the measures mandated by this standard require VAB inspection. Exclusions from scope 2.5.6 The requirements in this document are not applicable to vehicles that operate solely within a possession. 2.5.7 For trains that spend a minority of time on Network Rail controlled infrastructure, the train operator does not need to have a train radio compliant with Parts 4, 5, 6 and 7 of this document, provided that the requirements of section 8.3 of this document are complied with. 2.5.8 From the date agreed under clause 2.5.3, where a radio system is being used solely for shunting operations that are not taking place on running lines, it is permissible for the radio system not to comply with Parts 4, 5, 6, 7 and 8, provided the train operator ensures that the elements of the radio system for which the train operator has responsibility, comply with Parts 3 and 9 of this document. 2.5.9 This document is not applicable to the use of GSM-R hand-portables (sometimes referred to as IVRS systems) where used to supplement legacy or new train radio systems, for example to provide mitigation to specific risks in axle counter areas. Such systems are not considered to be train radio systems in the sense of this document. 2.5.10 This document is restricted to the train radio application. The measures in this document apply whether or not other applications are using the same infrastructure (for example, ERTMS). Page 8 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications 2.6 Application Rail Safety and Standards Board 2.6.1 There are no requirements applicable to RSSB. 2.7 Document management Superseded documents 2.7.1 The following Railway Group documents are superseded, either in whole or in part as indicated: Superseded documents: Sections superseded Date when sections are superseded GO/RT3410, issue 1, June 1997 Train Radio Communication GO/OP0004, issue 1, September 1993 Provision of Radio for Shunting Purposes All 7 February 2004 All 7 February 2004 Related requirements in other documents 2.7.2. The documents listed below contain requirements that are relevant to the application of this document. GE/RT8081 Requirements for GSM-R voice radio system Technical Specification for Interoperability relating to the Control-Command and Signalling Subsystem EIRENE Functional Requirements Specification EIRENE System Requirements Specification European Interoperability Directive (96/48EC) The Wireless Telegraph Act 1949 The Telecommunications Act 1984 The Communications Bill 2003 2.8 Definitions and acronyms Broadcast calls 2.8.1 A call from, for example, the signaller to all train drivers within the boundaries of a geographic area. Only the initiator of the call can talk, the recipients can listen only. Cab secure radio 2.8.2 A legacy analogue train radio system implemented, prior to the publication of this document, over part of the rail network providing secure communications between driver and signaller. In service 2.8.3 A train is in service from the time it starts its journey until the time it completes its journey. A vehicle is in service when it forms part of a train which is in service. Legacy train radio system 2.8.4 A train radio system that was implemented prior to the publication of this document. Page 9 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications National radio network 2.8.5 A legacy analogue train radio system implemented, prior to the publication of this document, across the rail network providing non-secure communications between driver and regional controller. Pre-defined geographic area 2.8.6 A part of the railway defined and stored within the train radio system configuration. Regional controller 2.8.7 An individual within an infrastructure controller s operations control who is responsible for making and receiving calls on the train radio system. Stock number 2.8.8 This is the class identifier, followed by a three-digit individual vehicle (in the case of locomotives) or unit (in the case of multiple units) identifier (for example 465201). See GM/RT2210 for further information. Traction unit 2.8.9 Any railway vehicle, which has the capacity for self-propulsion (whether or not the power by which it operates is derived from a source external to the vehicle). Train 2.8.10 Either: a) two or more items of rolling stock coupled together, at least one of which is a traction unit, or b) a traction unit not coupled to any other rolling stock. Train identity 2.8.11 An item of information that identifies a particular train and which is readily known to the signaller and regional controller. For example, the train identity could be the train running number, train reporting number or head-code. Train radio 2.8.12 Equipment installed on or within the train, providing the driver with access to the train radio system. Train radio fixed infrastructure 2.8.13 The part of the total train radio system at fixed locations necessary for radio communication with a train. Train radio number 2.8.14 The unique number allocated to each train radio. Train radio system 2.8.15 A radio system providing the principle means of voice and related messaging radio communications between train drivers and shore-based locations. Page 10 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications Part 3 Requirement for installation 3.1 Train radio installation 3.1.1 Train operators shall ensure that a train radio can be operated from each cab that is required to be used as a driving cab of a train in service. The installation can either be permanent or utilise transportable or portable equipment, provided that the train radio is compliant with all applicable requirements in this document. 3.1.2 The train operator shall ensure that: a) the driver always has access to a train radio that is compatible with the train radio fixed infrastructure on each of the routes travelled by the train when in service b) train radios have sufficient power supply for the duration of the journey, with an appropriate contingency allowance. 3.2 Train radio fixed infrastructure installation 3.2.1 The infrastructure controller shall ensure train radio fixed infrastructure is fitted on all lines in accordance with this document. 3.3 Responsibilities Infrastructure controller 3.3.1 The infrastructure controller shall be responsible for: a) the provision and maintenance of all train radio fixed infrastructure equipment, including fixed terminals, base stations, communication links to other networks and interfaces to external infrastructure-based systems b) the provision and maintenance of infrastructure-based voice recording facilities c) the control of train radio fixed infrastructure software d) the train radio fixed infrastructure system management, including subscriber management e) the identification of locations and scenarios where only intrinsically safe equipment can be used because of a risk of explosion. Train operators 3.3.2 Train operators shall be responsible for: a) the provision and maintenance of all train radio system equipment mounted on rail vehicles b) the provision and maintenance of test facilities required to demonstrate that train radios are operational c) where applicable, identifying locations and scenarios where only intrinsically safe equipment can be used because of a risk of explosion. Page 11 of 30
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Uncontrolled When Printed Railway Group Standard Messaging Communications Part 4 Train radio system requirements 4.1 Introduction 4.1.1 This section details the minimum requirements for radio systems, enabling voice and related messaging communications between trains in service and shore-based locations. This section does not apply to radio systems used solely for shunting operations that are not taking place on running lines. 4.2 Basic functionality Driver initiated emergency calls 4.2.1 The train radio system shall enable an emergency voice call to be made by a driver of a train in service. 4.2.2 Following connection of the emergency voice call, the driver shall have access to a speech connection in order to pass information. 4.2.3 The signaller responsible for the location of the train shall be a recipient of the emergency voice call and shall have access to a speech connection. 4.2.4 Recipients of the emergency voice call shall also include all drivers of trains in service in a predefined geographic area, which is based on the location of the train which initiated the emergency call. Signaller initiated emergency calls 4.2.5 The train radio system shall enable an emergency voice call to be made by a signaller. 4.2.6 Following connection of the emergency voice call, the signaller shall have access to a speech connection in order to pass information. 4.2.7 Recipients of the emergency voice call shall include all drivers of trains in service in a pre-defined geographic area wholly or partly within the signaller s area of responsibility. Regional controller initiated emergency calls 4.2.8 The train radio system shall enable an emergency voice call to be made by a regional controller. 4.2.9 Following connection of the emergency voice call, the regional controller shall have access to a speech connection in order to pass information. 4.2.10 Recipients of the emergency voice call shall include all drivers of trains in service, and all signallers in a pre-defined geographic area wholly or partly within the regional controller s area of responsibility. Failure to connect emergency calls 4.2.11 The train radio system shall enable the call initiator to be made aware when the system has failed to connect the emergency call. The infrastructure controller and train operators shall each have procedures which address this situation. Driver initiated non-emergency calls 4.2.12 The train radio system shall enable a driver of a train in service to make two-way non-emergency voice calls (see clauses 4.2.18 and 4.2.20) to: a) the signaller responsible for the location of the train b) the regional controller responsible for the location of the train. Page 13 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications Signaller and regional controller initiated non-emergency calls 4.2.13 The train radio system shall enable the signaller to make a non-emergency: a) broadcast voice call to all trains in service in a pre-defined geographic area which lies wholly or partly within the signaller s area of responsibility b) two-way point-to-point voice call to a driver of a train in service in the signaller s area of responsibility. 4.2.14 The train radio system shall enable the regional controller to make a non-emergency: a) broadcast voice call to all trains in service in a pre-defined geographic area which lies wholly or partly within the regional controller s area of responsibility b) two-way point-to-point voice call to a driver of a train in service in the regional controller s area of responsibility. 4.2.15 For two-way voice calls to a driver of a train in service initiated by a signaller or regional controller (specifically clauses 4.2.13b) and 4.2.14b)): a) the user shall be able to initiate the call by entering the train identity, provided that the train radio system has sufficient information to be able to determine the intended recipient from the train identity. If sufficient information is not available, then the user shall be notified accordingly b) the user shall be able to initiate the call by entering the stock number, provided that the train radio system has sufficient information to be able to determine the intended recipient from the stock number. If sufficient information is not available, then the user shall be notified accordingly. Handling of multiple emergency calls 4.2.16 The infrastructure controller, in consultation with train operators, shall define how the train radio system handles multiple emergency calls made in the same or overlapping areas. Routing of 999/112 calls 4.2.17 Any 999/112 calls made on the train radio system shall be routed to the railway emergency operator. The infrastructure controller shall have procedures in place to ensure that the railway emergency operator informs the appropriate signallers and/or regional controllers of any relevant and important content of any 999/112 call made on the train radio system. Train location information 4.2.18 The infrastructure controller shall assess the use of train location information systems to mitigate the risk of mis-routing of driver to signaller/regional controller calls (specifically clauses 4.2.3, 4.2.12a) and 4.2.12b)). The assessment shall be on an area-by-area basis and shall include consideration of: a) the accuracy, reliability and integrity of the information source when compared to the internal call routing capabilities of the train radio system b) the complexity of route sections and signaller control areas c) the intensity of train service d) whether legacy train radio systems have previously utilised the information source. Page 14 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications 4.2.19 The provision of sources of train location information and any assessment of non-implementation of such sources shall be re-validated each time there is a change to the potential sources of train location information. Accuracy of call routing 4.2.20 For driver-initiated calls (specifically clauses 4.2.3, 4.2.12a) and 4.2.12b)), where the train radio system does not have sufficient information to determine the intended recipient, then it is permitted that the call is routed to more than one signaller (specifically clauses 4.2.3 and 4.2.12a)) or regional controller (specifically clause 4.2.12b)). In this case, the infrastructure controller shall have a written procedure that specifies the action to be taken by each signaller or regional controller. Initialisation information 4.2.21 At the commencement of a journey it is necessary for the train identity to be associated with the train radio. If this association is performed incorrectly, then miscommunication can occur during the train s journey. 4.2.22 The infrastructure controller and train operators shall put in place appropriate measures to control the risk that initialisation information is incorrect or incomplete. 4.3 Basic performance requirements Coverage and related system parameters 4.3.1 The train radio system shall enable continuous communications between shore-based locations and trains at all locations, subject to transient effects outside the control of Railway Group members. 4.3.2 In those locations where the train radio system is to be used in conjunction with handheld shunting radios to support shunting operations (see clause 9.2.1), then the train radio system shall enable continuous communications to and from a shunter, subject to transient effects outside the control of Railway Group members. 4.3.3 The precise technical specification of the coverage level and other supporting system parameters is system and technology dependent. The infrastructure controller, with the participation of the train operators, shall be responsible for developing and maintaining this technical specification for the train radio system. The specification shall include: a) train radio performance and configuration requirements (for example, the required combination of power output, receiver sensitivity, antenna gain and positioning, feeder losses, etc) to be met by train radios b) train radio fixed infrastructure coverage specification (field strength, carrier to noise and carrier to interference ratios, etc) c) train radio and train radio fixed infrastructure reliability, availability and maintainability d) specific consideration of the functionality and performance required of the train radio system on each route e) coverage maps. Emergency call priority 4.3.4 Emergency calls (see clauses 4.2.1 to 4.2.11) shall take priority over all other calls. Where necessary, established non-emergency calls shall be pre-empted, in order for emergency calls to reach the intended recipients. Page 15 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications Call set-up times 4.3.5 Call set-up times and the probability of call success shall be in accordance with the performance requirements set out in section 3.4 of the EIRENE Functional Requirements Specification (EFRS). 4.3.6 The infrastructure controller shall ensure that the train radio fixed infrastructure is designed, implemented and maintained so as to achieve the call set-up times under all reasonably foreseeable call traffic levels. The infrastructure controller shall consult with the train operators, in order to determine the reasonably foreseeable call traffic levels. 4.4 Defective equipment 4.4.1 Requirements concerning defective on-train train radio equipment are set out in GO/RT3437. 4.4.2 The infrastructure controller shall put in place alternative plans if the train radio fixed infrastructure become defective. 4.4.3 The infrastructure controller, with the participation of the train operators, shall define these plans and associated procedures. 4.5 Additional measures to support operational enhancements, where required Introduction 4.5.1 In order to support certain localised operational enhancements (for example, driver only operation of passenger trains), additional train radio functionality beyond that stated in section 4.2 is necessary. This additional functionality need only be provided in those signalling areas where support for operational enhancements is required (for example, in those signalling areas in which driver only operation of passenger trains is performed), and in those trains that are to utilise the operational enhancements (for example, those trains that are intended to operate as driver only operation of passenger trains). Primary means of communication for the authorisation of train movements 4.5.2 Clauses 4.5.3 to 4.5.4 set out the additional requirements on the train radio system in locations where the train radio system is to be used as the primary means of voice communications between driver and signaller for the authorisation of train movements. 4.5.3 Within the signalling areas operating this operational enhancement, the train radio fixed infrastructure shall have sufficient information to know which trains are in each signaller s area of responsibility. This is to enable driver initiated non-emergency calls to the signaller (specifically clause 4.2.12a)) to be routed to only the intended recipient (compare to clause 4.2.20 for basic functionality). 4.5.4 It is a prerequisite that train identities of trains using this operational enhancement shall be planned to be unique within the signalling areas operating this operational enhancement. When combined with clause 4.5.3, unique train identities shall enable signallers to: a) call trains directly by entering the train identity (see clause 4.2.15a)) b) uniquely identify incoming calls from a train based on the displayed train identity (see clause 6.2.1a)). Driver only operation of passenger trains 4.5.5 Clauses 4.5.6 to 4.5.9 set out the additional requirements on the train radio system in locations where the train radio system is to be used in support of driver only operation of passenger trains. GO/RT3271 sets out other measures, not related to the train radio system, that are necessary for driver only operation of passenger trains. Page 16 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications 4.5.6 The train radio system shall meet all of the additional requirements that apply when the train radio system is to be used as the primary means of voice communications between driver and signaller for the authorisation of train movements (specifically clauses 4.5.3 to 4.5.4). 4.5.7 Train radios on trains that are to be operated as driver only operation of passenger trains shall interface to the on-train driver safety device (DSD) and public address (PA). 4.5.8 Upon activation of the DSD, the train radio system shall provide the signaller with an emergency alarm. The alarm shall provide sufficient information for the signaller to be able to determine immediately the train from which the alarm originated. 4.5.9 The train radio system shall enable the signaller to relay a voice message over a train s PA system. Driver initiated calls to the electrical control room operator 4.5.10 Clause 4.5.11 sets out the additional requirements on the train radio system in locations where the train radio system forms part of the electrification communication strategy on an electrified route. 4.5.11 The train radio system shall enable the driver to make a two-way non-emergency voice call to the electrical control room operator (ECRO) responsible for the current location of the train. The call shall be capable of being initiated by the driver, following a small number of key presses. 4.6 Further functionality 4.6.1 It is permitted that further functionality (for example, pre-defined messaging, variable content text messaging and fax), as agreed by the infrastructure controller and train operators, be supported by the train radio system. Any further functionality shall: a) not compromise the requirements set out in this document b) be demonstrated not to have a negative impact on driver or signaller attention and workload. Pre-defined messages 4.6.2 Clauses 4.6.3 to 4.6.5 set out the requirements to be applied if pre-defined messages (for example, Waiting at Signal ) are to be utilised. 4.6.3 The infrastructure controller, with the participation of the train operators, shall specify a set of pre-defined messages to be used on the controlled infrastructure. In specifying these, the following requirements shall be adhered to, in order to limit driver distraction whilst moving: a) each pre-defined message shall be able to be accommodated, without user interaction, onto the screen display of each train radio b) all pre-defined messages shall be short and unambiguous c) the total number of pre-defined messages shall be kept to a minimum d) the operational use of pre-defined messages shall be consistent with the capabilities of the messaging technology employed. 4.6.4 The use of pre-defined messages shall not prevent the sending or receiving of emergency calls. 4.6.5 The sender of a pre-defined message shall receive a failure indication if the message cannot be delivered to the intended recipient, unless the failure is such that a failure indication cannot be provided. Page 17 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications Use of variable content messaging 4.6.6 Clauses 4.6.7 to 4.6.10 set out the requirements to be applied if variable content messages (for example, variable content text messages or faxes) are to be utilised. 4.6.7 Railway Group members are permitted to use variable content messaging in order to confirm safety-critical instructions between signallers and drivers. Railway Group members shall not use variable content messages to replace any existing procedures for passing safety-critical information. For example, those procedures set out in GE/RT8000. 4.6.8 If variable content messages are sent to a driver, signaller or the regional controller, then their arrival shall be announced by a suitably non-intrusive means and shall not require the recipient to respond to secure their receipt. It shall be possible for the recipient to access such messages when their duties permit. 4.6.9 The operational use of variable content messaging shall be consistent with the capabilities of the messaging technology employed. 4.6.10 The use of variable content messages shall not prevent the sending or receiving of emergency calls. 4.6.11 Where printer facilities are provided for making hard copies of variable content messages, then these facilities shall be suitable and sufficient for the purposes. Factors for consideration include but are not limited to: a) font size and type b) paper dimensions and type c) print colour. 4.7 Use of the train radio system Access to the train radio system 4.7.1 Unauthorised access to the train radio system communication facilities shall be prevented, in particular by members of the public. Training requirements 4.7.2 Company policy, procedures and training shall ensure that authorised users: a) are aware of the risks of a driver using the train radio system whilst moving, and avoid communicating with a driver on the move, except calls and pre-defined messages from signallers or regional controllers b) respond to any call or message, except calls and pre-defined messages from signallers or regional controllers, at the driver s discretion, subject to the prevailing operational conditions c) do not use the train radio system for any purpose other than that agreed by the infrastructure controller and train operators. 4.7.3 In addition, company policy, procedures and training shall ensure that drivers: a) are not required or permitted to compose a variable content message or transfer a variable content message to hard copy whilst moving b) are not required or permitted to respond to calls or messages whilst moving, except calls and pre-defined messages from signallers or regional controllers subject to the prevailing operational conditions Page 18 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications c) are not required or permitted to initiate calls or send messages whilst moving, except when the driver considers it necessary, having taken into account the safety and operational need. 4.7.4 GE/RT8046 sets out appropriate management processes which seek to ensure that all operational personnel undertake safety communications in the manner set out in GE/RT8000. Page 19 of 30
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Uncontrolled When Printed Railway Group Standard Messaging Communications Part 5 Train radio requirements 5.1 Introduction 5.1.1 This section details the minimum requirements for equipment located on a train for the purposes of providing the train radio facilities identified in Part 4. This section does not apply to radio systems used solely for shunting operations that are not taking place on running lines. 5.2 Equipment requirements Call handling requirements 5.2.1 Driver initiated emergency calls (see clauses 4.2.1 to 4.2.4) shall be initiated by a device, such as a push button, specifically provided for this purpose. The device shall be coloured red or clearly marked to identify its function under all operating conditions. 5.2.2 Train operators shall perform an assessment of those locations that a driver is required to call frequently using the train radio as part of the driver s duties. Drivers shall be able to initiate calls to frequently called locations using a small number of key presses. 5.2.3 Drivers shall be able to initiate calls and be aware that a call has been answered without lifting the radio handset. 5.2.4 Incoming broadcast (see clauses 4.2.13a) and 4.2.14a)) and emergency calls (see clauses 4.2.1 to 4.2.10) shall automatically be connected to the loudspeaker if the handset is not in use, or to the handset if the handset is off hook. Train radio failure 5.2.5 The train radio shall provide a failure indication if connection is lost with the train radio fixed infrastructure or if there is a failure within the train radio, unless the failure is such that a failure indication cannot be provided. Audible indications 5.2.6 Train radio audible indications shall be of the following distinct types, which shall be immediately apparent to, and recognisable by, the driver: a) emergency call indication: used to inform the driver of an incoming emergency call b) priority indication: the audible indication shall alert the driver to the fact that the train radio requires the driver s immediate attention, subject to the prevailing operational conditions c) informative indication: the audible indication shall be non-intrusive and not require the driver to perform any immediate action. It shall be used for functions that allow the driver to respond when their duties permit. 5.2.7 Further requirements on indications are set out in GM/RT2161. Multiple train radios in the cab 5.2.8 Where it is necessary, due to the routes travelled by the train, for the train to be equipped with more than one train radio, then consideration shall be given to providing a single train radio interface in the cab for the driver. 5.2.9 Only one train radio shall be operational at any one time. Page 21 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications 5.2.10 The train operator shall have documented procedures in place to cover multiple train radios in the same cab, including: a) a procedure to ensure that the correct train radio is in use at all times b) a procedure for using a single train radio user interface where such an interface is provided. Train radio controls 5.2.11 In order to minimise driver distraction, the train radio shall be located such that the driver can view the display and operate the controls without moving from the primary driving position. Further requirements on the positioning of the train radio are set out in GM/RT2161. 5.2.12 Train radios shall be procured which have been designed according to ergonomic principles for usability and to minimise driver distraction. In particular, the principles shall have governed the size, shape and coding of controls and displays according to frequency of use, sequence of use, and importance of use. 5.2.13 Controls and displays shall be designed for use under all operating conditions (for example, by including backlighting for night-time use). 5.2.14 The train radio driver interface shall be designed so as to minimise reliance upon menu structures for regularly used functions. However, it is permissible for infrequent functions to be embedded in menus if this results in reduced clutter on the interface. 5.2.15 Train radio controls shall be appropriately protected against inadvertent or accidental use, especially with regard to the emergency call function. 5.2.16 The sound output level of the train radio loudspeaker shall be adjustable by the driver, but not to such a low level that there could be false reporting of its malfunction. 5.2.17 The sound output level calibration shall be such that when set to the mid-level, normal speech and any warning tones are clearly audible in the normal operating environment of the cab by all drivers. 5.2.18 When set at maximum sound output level, the train radio shall not prevent other cab system warning tones from being heard by the driver. Train failure conditions 5.2.19 The driver shall continue to have access to the train radio system under train failure conditions, unless the train radio system suffers an internal failure that prevents communication. Data recorders on trains 5.2.20 The train radio shall be capable of providing information concerning the status and operation of the train radio to the data recorder on the train. This shall include information concerning the initiation and receipt of emergency call events. 5.2.21 Requirements concerning data recorders on trains are set out in GM/RT2472. Testing of PTT facilities 5.2.22 If press-to-talk (PTT) facilities are used during emergency calls, the PTT shall be tested and proven to be operational before entering in service. The PTT test shall not result in an emergency call being initiated. Page 22 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications Part 6 Train radio fixed infrastructure requirements 6.1 Introduction 6.1.1 This section details the minimum requirements for train radio fixed infrastructure equipment and procedures employed for the purposes of providing the train radio facilities identified in Part 4. This section does not apply to radio systems used solely for shunting operations that are not taking place on running lines. 6.2 Train radio fixed infrastructure Call handling 6.2.1 Signaller and regional controller terminals shall: a) for driver initiated calls (specifically clauses 4.2.1, 4.2.12a) and 4.2.12b)), provide the user with the train identity, where this is available, in conjunction with the call. If the train identity is not available, then the user shall be provided with the stock number of the train b) be capable of accepting two or more calls and enable the user to deal with one call at a time and in whichever order the user chooses c) allow the user to terminate any call to which they are a party d) enable the user to readily transfer a call to another location, in particular those locations identified in GE/RT8021. Communications failure 6.2.2 The signaller shall be provided with an audible and visual indication of a service-affecting fault that prevents the signaller from making or receiving emergency calls, unless the failure is such that a failure indication cannot be provided. 6.2.3 The regional controller shall be provided with an audible and visual indication of a service-affecting fault that prevents the regional controller from making emergency calls, unless the failure is such that a failure indication cannot be provided. Audible indications 6.2.4 Audible indications of the signaller and regional controller terminals shall be of the following distinct types, which shall be immediately apparent to, and recognisable by, the user: a) emergency call indication: used to inform the signaller of an incoming emergency call b) priority indication: the audible indication shall alert the user to the fact that the train radio system requires the user s immediate attention, subject to the prevailing operational conditions (to be used, for example, when a train driver calls to request the attendance of the emergency services) c) informative indication: the audible indication shall be non-intrusive and not require the user to perform any immediate action. It shall be used for functions that allow the user to respond when their duties permit. 6.2.5 Further requirements on indications are set out in GK/RT0025. Signaller and regional controller terminals 6.2.6 User interfaces shall be designed according to ergonomic principles for usability. These principles shall govern the size, shape and coding of controls and displays according to frequency of use, sequence of use, and importance of use. Page 23 of 30
Railway Group Standard Uncontrolled When Printed Messaging Communications 6.2.7 The controls of the signaller s and the regional controller s terminals shall be appropriately protected against inadvertent or accidental use, especially with regard to the emergency call function. 6.2.8 If press-to-talk facilities are used during emergency calls, the PTT shall be tested and proven to be operational each day. The PTT test shall not result in an emergency call being initiated. 6.2.9 GK/RT0025 sets out further requirements that apply to the signaller terminals. Recording 6.2.10 The infrastructure controller, for later analysis, shall record all operational and emergency train radio communications (voice and related messaging communications) involving any of the following: a) a driver b) a signaller. 6.2.11 Requirements concerning recording facilities are set out in GE/RT8021. 6.2.12 Communication recordings shall be made available for monitoring purposes as a means of ensuring system integrity and user discipline. Requirements concerning the monitoring of communications are set out in GE/RT8046. Procedural requirements 6.2.13 The infrastructure controller shall ensure that: a) there are documented arrangements identifying those responsible for dealing with emergency calls, the actions necessary to deal effectively with emergency situations and specifying the records to be maintained and for what period b) signallers dealing with emergency calls have immediate access to information which may be required in handling an emergency situation, as set out in GO/RT3471 c) there are documented arrangements which enable the effective handling of train radio system emergency calls received, arising on lines which interface with, or are immediately adjacent to, those controlled by the infrastructure controller d) signallers and regional controllers are aware of the pre-defined geographic areas over which emergency (see clauses 4.2.1 to 4.2.10) and broadcast (see clauses 4.2.13a) and 4.2.14a)) calls are made. Lineside signs 6.2.14 The infrastructure controller, in consultation with the train operators, shall determine a consistent policy for whether lineside signs are required to support the train radio system. 6.2.15 Other requirements concerning lineside signs are set out in GI/RT7033. Page 24 of 30
Uncontrolled When Printed Railway Group Standard Messaging Communications Part 7 System management and maintenance requirements 7.1 Introduction 7.1.1 This section details the minimum requirements for maintenance and system management of train radio systems. 7.2 System management and maintenance 7.2.1 The infrastructure controller shall ensure that system management of the train radio system is carried out effectively with clear allocation of responsibilities. 7.2.2 A configuration management system shall be in place to support the safe maintenance, operation and modification of the train radio system. Processes shall be in place to ensure consistency between the train radio system and any interfacing systems (for example, train location systems). 7.2.3 System data and information shall be kept up-to-date. 7.2.4 Software and hardware updates shall be performed in a controlled fashion, and in particular ensure that different system elements are utilising compatible software and hardware versions. 7.2.5 Train radios shall not have software updated while the train is moving or in service. 7.2.6 A register shall be maintained that records the correlation between train radio numbers and stock numbers. Where the correlation between train radio number and stock number is changed, the train operator shall ensure that the register is updated before the train enters in service. 7.2.7 The infrastructure controller and train operators shall each have arrangements in place to: a) ensure that train radio communication equipment is operational, where necessary, to meet the requirements of this document b) monitor train radio equipment performance (other requirements are set out in GK/RT0106) c) share information on train radio performance as an input to safe train operation. This shall include identification of the areas where radio coverage is unacceptable d) monitor the ongoing compliance with the requirements set out in Part 4 e) identify for all calls, where possible, whether they connect or fail to connect. It is permissible for this to be automatically monitored by the train radio system f) monitor the quality of transmissions and reception of emergency and other calls. 7.2.8 Where planned maintenance of train radio fixed infrastructure affects performance or functionality of the train radio system, the infrastructure controller shall give sufficient advance notice to the train operators, in order that alternative train operating arrangements or communication systems can be considered, consulted with the infrastructure controller, published and implemented. 7.2.9 In the following circumstances, details of the permitted arrangements for train operation shall be published in the appropriate operating publications or late notices issued to staff: a) temporary alternative train radio system arrangements agreed with the infrastructure controller (see also section 4.4) b) locations where the use of radio for communication is required as an alternative to the use of signal post telephones. 7.2.10 The infrastructure controller and train operators shall each have arrangements which enable reporting of defects and unplanned outages in train radio systems or equipment, in order that: a) effective repairs can take place Page 25 of 30