Lineside Signals and Indicators - RSSB

1 This document is the property of Railway Safety. It shall not be reproduced in whole or in part without the written permission of the Controller, Railway Group Standards, Railway Safety. Published by: Railway Safety Evergreen House 160 Euston Road London NW1 2DX Copyright 2002 Railway Safety Railway Group Standard GK/RT0031 Issue Four Date February 2002 Lineside Signals and Indicators Synopsis This document defines the format, presentation and constraints on usage of Lineside equipment to be used for the signalling of trains. Signatures removed from electronic version Submitted by Paul Woolford Project Manager Authorised by Brian Alston Controller, Railway Group Standards Document to be Withdrawn as of 03/04/2010 To be Superseded by GKRT0045 Iss 1 Published on 06/02/2010 Uncontrolled When PrintedThis page has been left blank intentionally Document to be Withdrawn as of 03/04/2010 To be Superseded by GKRT0045 Iss 1 Published on 06/02/2010 Uncontrolled When Printed Lineside Signals and IndicatorsRAILWAY SAFETY 1 Railway Group Standard GK/RT0031 Issue Four Date February 2002 Page 1 of 35 Contents Section Description Page Part A A1 Issue record 2 A2 Implementation of this document 2 A3 Scope of Railway Group

2 Standards 3 A4 Responsibilities 3 A5 Health and safety responsibilities 3 A6 Technical content 3 A7 Supply 3 Part B B1 Purpose 5 B2 Application of this document 5 B3 Definitions 5 B4 Colour light signal 6 B5 Colour light splitting distant signal 8 B6 Co-acting signal 10 B7 Banner repeating signal 10 B8 Position light signal 12 B9 Position light junction indicator 13 B10 Alphanumeric route indicator 15 B11 Points indicator 16 B12 Driver s level crossing indicator 17 B13 Loading / unloading indicator 17 B14 SPAD indicator 18 B15 Signal OFF indicator 19 B16 Right away indicator 20 B17 Close doors indicator 20 B18 Barriers up

3 Indicator 20 B19 Stop board 21 B20 Distant board 22 B21 Semaphore stop signal 22 B22 Semaphore distant signal 24 B23 Semaphore subsidiary signal 25 B24 Semaphore shunting signal 26 B25 Buffer stops on signalled routes 27 B26 Colour requirements 28 B27 Equipment performance requirements 29 B28 Permitted associations of aspects and Indicators 32 References 34 Document to be Withdrawn as of 03/04/2010 To be Superseded by GKRT0045 Iss 1 Published on 06/02/2010 Uncontrolled When Printed Lineside Signals and Indicators 2 RAILWAY SAFETY Railway Group Standard GK/RT0031 Issue Four Date February 2002 Page 2 of 35 Part A A1 Issue record This document will be updated when necessary by distribution of a complete replacement.

4 Issue Date Comments One January 1996 Initial issue. Replaced SSP2, GS/ST0003, SSP4, SSP6 (sections 5 and 8 only), GS/ST0008, SSP13, SSP15, SSP29, SSP44, SSP45, SSP60, SSP63, SSP67, SSP82 and JDP C001. Two December 1996 Replaced GK/RT0031 issue one. Three October 1999 Replaced GK/RT0031 issue two, and section 8 of GK/RT0005 issue one which had been revised and incorporated into this document as sections inclusive. Four February 2002 Replaces GK/RT0031 issue three. Replaces CP-PM-040, parts of which have already been incorporated into GC/RT5033 Issue 4 of this standard has been subject to extensive re-writing and therefore no amendment bars have been inserted. A2 Implementation of this document The publication date of this document is February 2002. This document comes into force on 6 April 2002. The dates by which compliance with the requirements of this document is to be achieved are set out in Part B2.

5 Where those dates are later than the date on which this document comes into force, this is to give Railway Group members additional time to plan and commence implementation so as to achieve full compliance by the dates set out in Part B2. This document supersedes the following Railway Group Standards, either in whole or in part as indicated: Railway Group Standard Issue No. Title RGS sections superseded by GK/RT0031 issue 4 Date(s) as of which sections are superseded GK/RT0031 3 Lineside Signals and Indicators All 6 April 2002 (GK/RT0031 issue 3 withdrawn as of this date) GK/RT0035 2 Layout of Lineside Signals 7, 15 6 April 2002 (GK/RT0035 issue 2 withdrawn as of this date) CP-PM-040 1 Provision of Buffer and Wheel Stop Lighting , 6 April 2002 (CP-PM-040 withdrawn as of this date) All other sections of CP-PM-040 have been superseded by Document to be Withdrawn as of 03/04/2010 To be Superseded by GKRT0045 Iss 1 Published on 06/02/2010 Uncontrolled When Printed Lineside Signals and IndicatorsRAILWAY SAFETY 3 Railway Group Standard GK/RT0031 Issue Four Date February 2002 Page 3 of 35 GC/RT5033 already.

6 A3 Scope of Railway Group Standards The overall scope of Railway Group Standards is set out in Appendix A of GA/RT6001. The specific scope of this document is set out in Part B2. A4 Responsibilities Railway Group Standards are mandatory on all members of the Railway Group* 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 the Safety Case. *The Railway Group comprises Railtrack PLC, Railway Safety, and the train and station operators who hold railway safety cases for operation on or related to infrastructure controlled by Railtrack PLC.

7 Railtrack PLC is known as Railtrack. A5 Health and safety responsibilities In issuing this document, Railway Safety makes no warranties, express or implied, that compliance with all or any documents published by Railway Safety 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. A6 Technical content The technical content of this document has been approved by: Jeff Allan, Principal S&T Engineer, Railway Safety Richard Evans, Principal, Operations, Railway Safety Enquiries should be directed to Railway Safety Tel: 020 7904 7518 A7 Supply Controlled and uncontrolled copies of this document may be obtained from the Industry Safety Liaison Dept, Railway Safety, Evergreen House, 160 Euston Road, London NW1 2DX. Document to be Withdrawn as of 03/04/2010 To be Superseded by GKRT0045 Iss 1 Published on 06/02/2010 Uncontrolled When Printed Lineside Signals and Indicators 4 RAILWAY SAFETY Railway Group Standard GK/RT0031 Issue Four Date February 2002 Page 4 of 35 This page has been left blank intentionally Document to be Withdrawn as of 03/04/2010 To be Superseded by GKRT0045 Iss 1 Published on 06/02/2010 Uncontrolled When Printed Lineside Signals and IndicatorsRAILWAY SAFETY 5 Railway Group Standard GK/RT0031 Issue Four Date February 2002 Page 5 of 35 Part B B1 Purpose This document defines the format, presentation and constraints on usage of Lineside equipment to be used for the signalling of trains.

8 B2 Application of this document To whom the requirements apply This document contains requirements that are applicable to duty holders of the infrastructure controller category of Railway Safety Case. Compliance requirements Infrastructure The requirements of this document are mandatory for new Railtrack controlled infrastructure and for alterations to existing Railtrack controlled infrastructure for which Approval in Principle is given on or after 6 April 2002. When Approval in Principle is given before 6 April 2002, but the infrastructure has not yet been brought into service, the design shall be reviewed and, where reasonably practicable, brought into line with the requirements of this document. General compliance requirements Until 6 April 2002, or the date by which compliance is achieved (if earlier), the applicable requirements of the predecessor documents shall continue to be met (see Part A for details).

9 After 6 April 2002, or after the date by which compliance is achieved if earlier, Railway Group members shall not deviate from the requirements set out in this document. Where Approval in Principle is given on or after 6 April 2002 but it is considered not reasonably practicable to comply with the requirements set out in this document, authorisation not to comply shall be sought in accordance with GA/RT6001, GA/RT6004 or GA/RT6006. Exclusions from the application of this document This document does not include requirements for maintenance of signal visibility, aspect sequences, signal spacing or positioning (see GE/RT8034, GK/RT0032, GK/RT0034 and GK/RT0037 respectively). B3 Definitions Centre-line (of signal or indicator) The line (usually extending out perpendicularly from the face of a signal) forming the optical axis of the beam. Chromaticity (for lights only) The co-ordinates of a colour which may be plotted on the 1931 CIE (Commission Internationale de l Eclairage) Chromaticity diagram to graphically represent the colour.

10 Straight-ahead route The non-diverging (and usually the fastest) route from a junction signal. Signal red, signal yellow, signal green, signal white, lunar white Throughout this document these light colour descriptions correspond to the appropriate colour definition in section of this document. The prefix signal is omitted from text references other than in respect of white. Document to be Withdrawn as of 03/04/2010 To be Superseded by GKRT0045 Iss 1 Published on 06/02/2010 Uncontrolled When Printed Lineside Signals and Indicators 6 RAILWAY SAFETY Railway Group Standard GK/RT0031 Issue Four Date February 2002 Page 6 of 35 Splitting distant A colour light splitting distant signal consists of two colour light signal heads side by side. The two heads are referred to as the main and offset heads (see section B5 for further details). For the purpose of this document the term splitting distant signal, without further qualification, applies to both inner and outer splitting distant Signals .