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RIS-0775-CCS Iss 3

AWS and TPWS Application Requirements

Synopsis

This document sets out requirements and guidance for the application of the United Kingdom (UK) Class B train protection system ‘TPWS’, which comprises the Automatic Warning System (AWS) and the Train Protection and Warning System (TPWS).

Summary Of Changes

Replaces issue two. Parts 2, 3, 4, and 6 have been revised. Part 5 has received minor changes only. Appendices A, B and C have been revised and Appendices D, E, and F are new. All other Appendices from issue two have been removed.

The following sound files that support this standard can be found on the RSSB website using the following links:

-  SPAD alert, contact the signaller

-  Overspeed, contact the signaller

-  TPWS and AWS operational

NOTE: If you have issues playing the sound file it is recommended to use an alternative internet browser that supports .WAV files.

NOTE: Issue three was republished on 9 March 2021 as the version published on 6 March 2021 was missing section 3.2.8 and had text The implementation of TPWS includes an assumption that derailment risk is tolerable if a train is exceeding the permissible speed by less than 50 %’removed from clause 3.2.10 b).

The content of this document will be reviewed under an existing or future project.

Optional reading and resources:

Watch our webinar for more information

Right Track 41: Ladbroke Grove, SPADs, and the birth of the TPWS

How Are Human Factors Included in Standards?

Retrofitting In-Cab TPWS

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Rail Industry Standard
Issued:
06/03/2021
Published:
06/03/2021
In Force:
06/03/2021
Last Review:
17/11/2022
Next Review:
06/03/2027

Details

Consultation Status Closed
Vehicle Assessment No
Supersedes RIS-0775-CCS Iss 2
Lead Committee Control Command and Signalling - CCS
Supporting Committee Rolling Stock - RST; Plant - PLT; Traffic Operation and Management - TOM
Briefing Notes 21 BN07
Impact Assessments
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21 IA04
Deviations
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21-019-DEV

AWS Isolation Indicator Colour